4.10 Antiderivatives  (Page 7/10)

There is a function such that $f\left(x\right)<0,f^{\prime }\left(x\right)>0,$ and $f\text{″}\left(x\right)<0.$ (A graphical “proof” is acceptable for this answer.)

There is a function such that there is both an inflection point and a critical point for some value $x=a.$

Given the graph of $f^{\prime },$ determine where $f$ is increasing or decreasing.

The graph of $f$ is given below. Draw $f^{\prime }.$

Find the linear approximation $L\left(x\right)$ to $y=x^2+\text{tan}\left(\pi x\right)$ near $x=\frac{1}{4}.$

Find the differential of $y=x^2-5x-6$ and evaluate for $x=2$ with $dx=0.1.$

$f\left(x\right)=x+{\text{sin}}^2\left(x\right)$ over $\left[0,\pi \right]$

$f\left(x\right)=3x^4-4x^3-12x^2+6$ over $\left[\mathrm{-3},3\right]$

$x\left(t\right)=3t^4-8t^3-18t^2$

$y=x+\text{sin}\left(\pi x\right)$

$g\left(x\right)=x-\sqrt{x}$

$f\left(\theta \right)=\text{sin}\left(3\theta \right)$

$\underset{x\to \infty }{\text{lim}}\frac{3x\sqrt{x^2+1}}{\sqrt{x^4-1}}$

$\underset{x\to \infty }{\text{lim}}\text{cos}\left(\frac{1}{x}\right)$

$\underset{x\to 1}{\text{lim}}\frac{x-1}{\text{sin}\left(\pi x\right)}$

$\underset{x\to \infty }{\text{lim}}{\left(3x\right)}^{1\text{/}x}$

$y=x^3+1,x_0=0.5$

$\frac{1}{x+1}=\frac{1}{2},x_0=0$

$g\left(x\right)=\sqrt{x}-\frac{1}{x^2}$

$f\left(x\right)=2x+6\text{cos}x,F\left(\pi \right)={\pi }^2+2$

$y=\frac{1}{x{\left(x+1\right)}^2}$

$y=x-\sqrt{4-x^2}$

A car is being compacted into a rectangular solid. The volume is decreasing at a rate of $2$ m ³ /sec. The length and width of the compactor are square, but the height is not the same length as the length and width. If the length and width walls move toward each other at a rate of $0.25$ m/sec, find the rate at which the height is changing when the length and width are $2$ m and the height is $1.5$ m.

A rocket is launched into space; its kinetic energy is given by $K\left(t\right)=\left(\frac{1}{2}\right)m\left(t\right)v{\left(t\right)}^2,$ where $K$ is the kinetic energy in joules, $m$ is the mass of the rocket in kilograms, and $v$ is the velocity of the rocket in meters/second. Assume the velocity is increasing at a rate of $15$ m/sec ² and the mass is decreasing at a rate of $10$ kg/sec because the fuel is being burned. At what rate is the rocket’s kinetic energy changing when the mass is $2000$ kg and the velocity is $5000$ m/sec? Give your answer in mega-Joules (MJ), which is equivalent to ${10}^6$ J.

The famous Regiomontanus’ problem for angle maximization was proposed during the $15$ th century. A painting hangs on a wall with the bottom of the painting a distance $a$ feet above eye level, and the top $b$ feet above eye level. What distance $x$ (in feet) from the wall should the viewer stand to maximize the angle subtended by the painting, $\theta ?$

An airline sells tickets from Tokyo to Detroit for $\text{\$}1200.$ There are $500$ seats available and a typical flight books $350$ seats. For every $\text{\$}10$ decrease in price, the airline observes an additional five seats sold. What should the fare be to maximize profit? How many passengers would be onboard?