Calculus

Problem 6301

Find the limit as tt approaches 0 for the expression 2t1t\frac{2^{t}-1}{t}.

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Problem 6302

Find the derivative of y=sin(tan(8x))y=\sin(\tan(8x)). What is yy'?

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Problem 6303

Find the rate of change of the curve f(x)=x3f(x)=-x^{3} from x=0x=0 to x=2x=2.

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Problem 6304

Find the integral of 5tan5xsec3xdx5 \tan^{5} x \sec^{3} x \, dx.

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Problem 6305

Find the integral: 7tan4xsec4xdx\int 7 \tan^{4} x \sec^{4} x \, dx

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Problem 6306

Calculate the integral: x23x24dx\int \frac{x^{2}-3}{x^{2}-4} d x

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Problem 6307

Calculate the integral: 2x+36x2+5x+1dx\int \frac{2 x+3}{6 x^{2}+5 x+1} d x

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Problem 6308

Find the limit as xx approaches 4 for the expression x2+8xx28x+16\frac{x^{2}+8 x}{x^{2}-8 x+16}.

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Problem 6309

Find the derivative of the function f(x)=3x1+xf(x)=\frac{3 x}{1+x} using the limit definition of the derivative.

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Problem 6310

Find the rate of change of food spending percentage on May 1, given y=35x0.25y=35 x^{-0.25} and x=7+0.2tx=7+0.2t.

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Problem 6311

Find the derivative of the function f(x)=(4x1)2f(x)=(4x-1)^{2}. What is f(x)=?f^{\prime}(x)=?

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Problem 6312

Find the derivative using the limit process for f(x)=3x+1f(x)=3x+1. What is f(x)f'(x)?

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Problem 6313

Find the derivative of the function f(x)=(2x24)1f(x)=(2x^2-4)^{-1}. What is f(x)f'(x)?

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Problem 6314

Find the derivative of the function r(x)=(0.1x24.2x+7.5)1.5r(x)=(0.1 x^{2}-4.2 x+7.5)^{1.5}. What is r(x)r'(x)?

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Problem 6315

Find the derivative of the constant function f(x)=2f(x)=2 using the limit process. What is f(x)=?f^{\prime}(x)=?

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Problem 6316

Find the derivative of the function h(x)=1(x2+x+1)2h(x)=\frac{1}{(x^{2}+x+1)^{2}}. What is h(x)h^{\prime}(x)?

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Problem 6317

Find the derivative of h(x)=334xh(x)=3-\frac{3}{4} x using the limit process. What is h(x)=?h^{\prime}(x)=?

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Problem 6318

Find the derivative using the limit process for f(x)=6x2f(x)=\frac{6}{x-2}. What is f(x)f^{\prime}(x)?

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Problem 6319

Find the derivative of the function h(x)=(3.1x3)21(3.1x3)2h(x)=(3.1 x-3)^{2}-\frac{1}{(3.1 x-3)^{2}}.

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Problem 6320

Find the slope of the tangent line for g(x)=49x+9g(x)=\frac{4}{9} x+9 at the point (-9,5).

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Problem 6321

Find the derivative using the limit process for f(x)=2x3+4x2f(x)=2 x^{3}+4 x^{2}. What is f(x)=?f^{\prime}(x)=?

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Problem 6322

A projectile is launched at 160 ft/s from a 30-ft stage. What is its maximum height?

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Problem 6323

Find the derivative of the function f(x)=9x+x2f(x)=\sqrt{9x+x^{2}}.

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Problem 6324

Find the slope of the tangent line to g(x)=19x2g(x)=19-x^{2} at the point (1,18)(1,18).

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Problem 6325

Find the derivative using the limit process for f(x)=x+8f(x)=\sqrt{x+8}. What is f(x)=?f^{\prime}(x)=?

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Problem 6326

Find the derivative of the function f(x)=1(x+9)2f(x)=\frac{1}{(x+9)^{2}}.

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Problem 6327

Find f(5)f(5) and f(5.1)f(5.1) to estimate f(5)f^{\prime}(5), rounding to one decimal place. Given f(x)=x(8x)f(x)=x(8-x).

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Problem 6328

Find the xx-values where the function y=x2/5y=x^{2/5} is differentiable.

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Problem 6329

Find the left and right derivatives of the function f(x)=x9f(x)=|x-9| at x=9x=9. Enter NONE if a derivative doesn't exist.

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Problem 6330

Find the derivative of h(x)=x+4h(x)=|x+4| at x=4x=-4. If it doesn't exist, write UNDEFINED. h(4)=h^{\prime}(-4)=

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Problem 6331

Find the derivative of the function f(x)=9x+x2f(x)=\sqrt{9x+x^{2}}, denoted as f(x)f^{\prime}(x).

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Problem 6332

Find the derivative of f(x)=x23f(x)=x^{2}-3 at x=4x=4. If it doesn't exist, write UNDEFINED. f(4)=f^{\prime}(4)=

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Problem 6333

Find a function ff such that f(5)=f(4)=0f(-5)=f(4)=0, f(0.5)=0f'(-0.5)=0, f<0f'<0 for x<0.5x<-0.5, and f>0f'>0 for x>0.5x>-0.5.

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Problem 6334

Find the derivative of f(x)=6xf(x)=\frac{6}{\sqrt{x}} using the limit process: f(x)=f^{\prime}(x)=\square.

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Problem 6335

Determine where the function ff is differentiable given:
f(x)={x28,x08x2,x>0 f(x)=\left\{\begin{array}{ll} x^{2}-8 & , x \leq 0 \\ 8-x^{2} & , x>0 \end{array}\right.

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Problem 6336

Is it true or false that if a function is differentiable at a point, it must be continuous there? Provide examples if false.

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Problem 6337

Find the tangent line equation for the function f(x)=x2+2f(x)=x^{2}+2 at the point (1,3). y=y=

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Problem 6338

Find the tangent line equation for the function f(x)=x+5xf(x)=x+\frac{5}{x} at the point (5,6)(-5,-6).

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Problem 6339

Find the tangent line equation for the function f(x)=x+2f(x)=\sqrt{x+2} at the point (2,2)(2,2). y=y=

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Problem 6340

Identify where the function increases, decreases, or is constant based on its graph starting at (-2,-5).

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Problem 6341

Determine concavity, inflection points, and critical points for f(x)=(4x+4sin(x))f(x)=-(4x+4\sin(x)), 0x2π0 \leq x \leq 2\pi.

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Problem 6342

Find the tangent line to f(x)=x2f(x)=x^2 parallel to 6xy+9=06x-y+9=0. Steps: 1) Find f(x)f'(x), 2) Find slope mm, 3) Solve f(x)=mf'(x)=m, 4) Get yy from f(x)f(x), 5) Use point-slope to find line equation.

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Problem 6343

Find the tangent line to f(x)=2x2f(x)=2x^{2} that is parallel to 2xy+4=02x-y+4=0.

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Problem 6344

Find g(5)g(5) and g(5)g^{\prime}(5) if the tangent line at (5,3)(5,3) passes through (3,5)(3,5).

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Problem 6345

Evaluate f(5)f(5) and f(5,1)f(5,1), then approximate f(5)f^{\prime}(5) for f(x)=x(8x)f(x)=x(8-x). Round to one decimal place.

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Problem 6346

Calculate the derivative yy' of the function y=x2y = x^2 at the point (3,9)(3,9).

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Problem 6347

Estimate the slope of the tangent line to y=x1/3y=x^{1/3} at the point (1,1) and verify it analytically. y=y'=

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Problem 6348

Estimate the slope of the tangent line to y=x1/2y=x^{-1/2} at (1,1)(1,1) and verify: y(1)=y^{\prime}(1)=.

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Problem 6349

Find the second derivative of y=x2y=x^{-2} at x=1x=1. What is y(1)=?y^{\prime \prime}(1)=?

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Problem 6350

Find the derivative of the function y=8y=8. What is y=y^{\prime}=?

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Problem 6351

Find the derivative of the function f(x)=324f(x)=-324. What is f(x)=?f^{\prime}(x)=?

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Problem 6352

Find the derivative of f(x)=x5f(x)=\sqrt[5]{x}.

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Problem 6353

Find the derivative of the function g(x)=18x11g(x) = 18x - 11. What is g(x)g'(x)?

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Problem 6354

Find the derivative of the function h(x)=7x8h(x)=7 x^{8}. What is h(x)=?h^{\prime}(x)=?

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Problem 6355

Find the derivative of the function g(x)=18x11g(x)=18x-11. What is g(x)=?g^{\prime}(x)=?

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Problem 6356

Find the derivative of the function f(x)=3x3x2+2x4f(x)=3 x^{3}-x^{2}+2 x-4. What is f(x)f^{\prime \prime}(x)?

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Problem 6357

Find the derivative of the function f(t)=4t28t9f(t) = 4t^{2} - 8t - 9. What is f(t)f^{\prime}(t)?

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Problem 6358

Find the derivative of the function y=π2cos(θ)cos(θ)y=\frac{\pi}{2} \cos (\theta)-\cos (\theta). What is yy^{\prime}?

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Problem 6359

Find the derivative of the function y=4(3x)2+7sin(x)y=\frac{4}{(3 x)^{2}}+7 \sin (x). What is y=?y^{\prime}=?

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Problem 6360

Find the derivative of the function g(t)=t28t3g(t)=t^{2}-\frac{8}{t^{3}}. What is g(t)g^{\prime}(t)?

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Problem 6361

Find the derivative of y=73x7y=\frac{7}{3 x^{7}}. What is y=?y^{\prime}=?

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Problem 6362

Find the derivative of the function y=4+5sin(x)y=4+5 \sin (x). What is y(x)=?y^{\prime}(x)=?

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Problem 6363

Find the slope of f(x)=4x2f(x)=\frac{4}{x^{2}} at the point (2,1) and confirm using a graphing utility. f(2)=f^{\prime}(2)=

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Problem 6364

Complete the tasks: Rewrite y=73x2y=\frac{7}{3 x^{2}}, differentiate to find yy^{\prime}, then simplify yy^{\prime}.

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Problem 6365

Find the slope of f(θ)=7sin(θ)θf(\theta)=7 \sin (\theta)-\theta at the point (0,0)(0,0) and confirm with a graphing utility.

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Problem 6366

Find the derivative of f(x)=x10x3f(x)=\sqrt{x}-10 \sqrt[3]{x}: f(x)=f^{\prime}(x)=\square.

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Problem 6367

Find the antiderivative of the function x23x24dx\int \frac{x^{2}-3}{x^{2}-4} d x.

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Problem 6368

Find the derivative of f(x)=7x3+5x2xf(x)=\frac{7 x^{3}+5 x^{2}}{x}. What is f(x)f^{\prime}(x)?

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Problem 6369

Find the derivative of the function f(x)=x33x2+2x2f(x)=\frac{x^{3}-3 x^{2}+2}{x^{2}}. What is f(x)f^{\prime}(x)?

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Problem 6370

Find the integral of 7tan4xsec4x7 \tan^4x \sec^4x. What is the result?

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Problem 6371

Find the average rate of change of f(t)=2t25f(t)=2 t^{2}-5 over [5,5.1][5,5.1] and compare it with the rates at t=5t=5 and t=5.1t=5.1.

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Problem 6372

Find the derivative of the function h(x)=7x8h(x)=7 x^{8}. What is h(x)h^{\prime}(x)?

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Problem 6373

Find where the graph of y=x3+9xy=x^{3}+9x has a horizontal tangent line. If none, enter NONE.

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Problem 6374

1. Find limx01+x+1xx\lim _{x \rightarrow 0} \frac{\sqrt{1+x}+\sqrt{1-x}}{x}.
2. Calculate limx2x33x2\lim _{x \rightarrow 2} \frac{x^{3}-3}{x-2}.
3. Determine limx23x12x\lim _{x \rightarrow 2} \frac{\sqrt{3-x}-1}{2-x}.
4. Evaluate limx2[2(x+3)+7]\lim _{x \rightarrow 2}[2(x+3)+7].
5. Compute limx0x2+3x+7\lim _{x \rightarrow 0} x^{2}+3 x+7.
6. Find limx1[(x+3)216]\lim _{x \rightarrow 1}\left[(x+3)^{2}-16\right].
7. Calculate limx1[(x+1)2+1]\lim _{x \rightarrow 1}\left[(x+1)^{2}+1\right].
8. Determine limx0[(2x+1)35]\lim _{x \rightarrow 0}\left[(2 x+1)^{3}-5\right].
9. Evaluate limx2x5x+2\lim _{x \rightarrow 2} \frac{x-5}{x+2}.

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Problem 6375

Find the derivative y=ddx(4(3x)2+7sin(x))y' = \frac{d}{dx} \left( \frac{4}{(3x)^{2}} + 7 \sin(x) \right).

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Problem 6376

Find the antiderivative of x23x24dx\int \frac{x^{2}-3}{x^{2}-4} d x.

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Problem 6377

Evaluate the integral: 7tan4xsec4xdx=?\int 7 \tan ^{4} x \sec ^{4} x \, dx = ?

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Problem 6378

Find xx-values where f(x)=2x3+3x2120x+7f(x)=2x^3+3x^2-120x+7 has horizontal tangents and their equations. Answers: x=5,4x=-5,4.

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Problem 6379

Find the antiderivative of x23x24dx\int \frac{x^{2}-3}{x^{2}-4} dx.

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Problem 6380

Find the limit: limx81x9+x\lim _{x \rightarrow \infty} \frac{81-\sqrt{x}}{9+\sqrt{x}}. Enter \infty, -\infty, or DNE if it doesn't exist.

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Problem 6381

Find the limits: 12. limx2x2x2x23x+2\lim _{x \rightarrow 2} \frac{x^{2}-x-2}{x^{2}-3 x+2}, 13. limx0x3+7xx2+2x\lim _{x \rightarrow 0} \frac{x^{3}+7 x}{x^{2}+2 x}, 14. limx03+x+2x\lim _{x \rightarrow 0} \frac{\sqrt{3+x}+\sqrt{2}}{x}, 15. limx23x2+x26x\lim _{x \rightarrow 2} \frac{\sqrt{3 x-2}+x}{2-\sqrt{6-x}}.

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Problem 6382

Find the limit: limu(u2+1)(8u21)(u2+3)2\lim _{u \rightarrow-\infty} \frac{(u^{2}+1)(8 u^{2}-1)}{(u^{2}+3)^{2}}. Enter \infty, -\infty, or DNE if it doesn't exist.

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Problem 6383

Berechnen Sie die Grenzwerte: a) limn(n+100n)\lim _{n \rightarrow \infty}(\sqrt{n+100}-\sqrt{n}) b) limnn(n+10n)\lim _{n \rightarrow \infty} \sqrt{n} \cdot(\sqrt{n+10}-\sqrt{n}) c) limn(4n2+3n2n)\lim _{n \rightarrow \infty}\left(\sqrt{4 n^{2}+3 n}-2 n\right)

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Problem 6384

Sketch the graph of a function ff with these limits and values: limx4+f(x)=5\lim_{x \to 4^+} f(x)=5, limx4f(x)=3\lim_{x \to 4^-} f(x)=3, limx1f(x)=3\lim_{x \to -1} f(x)=3, f(4)=4f(4)=4, f(1)=2f(-1)=2.

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Problem 6385

Find and simplify dydx\frac{d y}{d x} for y=x3(6x2)y=x^{3}(6-x^{2}).

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Problem 6386

Find and simplify dydx\frac{d y}{d x} for y=x3(6x2)y=x^{3}(6-x^{2}), y=5x(2x21)y=5x(2x^{2}-1), and y=2x+83x1y=\frac{2x+8}{3x-1}.

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Problem 6387

Find dydx\frac{d y}{d x} for y=(4x2+x)(xx2)y=(4 x^{2}+x)(x-x^{2}). No need to expand your answer.

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Problem 6388

Find and simplify dydx\frac{d y}{d x} for y=5x(2x21)y=5 x(2 x^{2}-1).

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Problem 6389

Find the derivative dydx\frac{d y}{d x} for y=3x29x+132x+4y=\frac{3 x^{2}-9 x+13}{2 x+4} without expanding.

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Problem 6390

Given values of f(t)f(t) at t=0,2,4,6,8,10t = 0, 2, 4, 6, 8, 10 are 135, 133, 129, 124, 118, 107. Determine the sign of the first and second derivatives. Estimate f(2)f^{\prime}(2) and f(8)f^{\prime}(8) using right difference quotients.

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Problem 6391

Find q(t)q^{\prime}(t), p(t)p^{\prime}(t), and revenue change at t=5t=5 for sales q(t)=6000t60t2q(t)=6000t-60t^2 and price p(t)=3000t2p(t)=3000-t^2.

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Problem 6392

Find the derivative f(4)f^{\prime}(4) for the function f(x)=2x33+1xf(x)=-\frac{2 \sqrt{x^{3}}}{3}+\frac{1}{x}.

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Problem 6393

Find the derivative of f(x)=x6xf(x)=\sqrt{x}-\frac{6}{\sqrt{x}} and calculate f(6)f^{\prime}(6) in simplest radical form.

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Problem 6394

Find the derivative f(4)f^{\prime}(4) of the function f(x)=4x+2x5f(x)=-\frac{4}{x}+\frac{2 \sqrt{x}}{5} as a simplified fraction.

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Problem 6395

Find the rate of change of monthly revenue 5 months after the sound system's introduction using R(t)=p(t)q(t)R(t) = p(t) \cdot q(t).

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Problem 6396

Find the antiderivative of f(x)=4ax3+3bx2+2cx+df'(x)=4ax^3 + 3bx^2 + 2cx + d.

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Problem 6397

The cost of airing xx commercials is C(x)=20+5,000x+0.04x2C(x)=20+5,000x+0.04x^{2}.
(a) Find C(x)C^{\prime}(x) and estimate the cost increase at x=4x=4.
(b) Find Cˉ(x)\bar{C}(x) and evaluate Cˉ(4)\bar{C}(4). What does this tell you?

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Problem 6398

Find the marginal revenue R(x)R'(x) and profit P(x)P'(x) for producing xx servings of pasta with cost C(x)=350+0.10x+0.002x2C(x)=350+0.10x+0.002x^2. Compute revenue and profit for 200 servings, and find when marginal profit is zero (x=250x=250 plates).

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Problem 6399

The cost of airing xx commercials is C(x)=20+5000x+0.04x2C(x)=20+5000x+0.04x^2.
(a) Find the marginal cost C(x)C'(x) and estimate for x=4x=4.
(b) Find the average cost Cˉ(x)\bar{C}(x) and evaluate Cˉ(4)\bar{C}(4). What does this tell you?

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Problem 6400

Determine the signs of f(x)f^{\prime}(x) and f(x)f^{\prime \prime}(x) for the given functions over the intervals provided.

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