Chapter 23

Technical Mathematics with Calculus · 223 exercises

Problem 10

Find the derivative of each function. Check some by calculator. $$y=\frac{5}{\left(x^{2}-1\right)^{2}}$$

7 step solution

Problem 10

Evaluate each limit. $$\lim _{x \rightarrow 4} \frac{x^{2}-16}{x-4}$$

4 step solution

Problem 11

Find, by hand, all of the terms in each probability distribuisn, and graph. $$\text { If } y=3 x^{3}+2 x^{2}, \text { find } y^{\prime \prime}(2)$$

5 step solution

Problem 11

Find the derivative \(d x / d y\) of \(x\) with respect to \(y.\) $$x=(y-2)(y+3)^{5}$$

4 step solution

Problem 11

Find the derivative of each function. Verify some of your results by calculator. As usual, the letters \(a, b, c, \ldots\) represent constants. Power Function with Negative Exponent. $$y=x^{-5}$$

4 step solution

Problem 11

Find the derivative of each function. Check some by calculator. $$y=\left(a-\frac{b}{x}\right)^{2}$$

4 step solution

Problem 11

Evaluate each limit. $$\lim _{x \rightarrow-3} \frac{x^{2}+2 x-3}{x+3}$$

3 step solution

Problem 12

Find, by hand, all of the terms in each probability distribuisn, and graph. $$\text { If } f(x)=x^{2}-4 x^{4}, \text { find } f^{\prime \prime}(3)$$

4 step solution

Problem 12

Find the derivative \(d x / d y\) of \(x\) with respect to \(y.\) $$x=\frac{y^{2}}{(4-y)^{3}}$$

5 step solution

Problem 12

Some of these can be multiplied out. For a few of these, take the derivative both before and after multiplying out, and compare the two. $$y=x^{2} \sqrt{3-4 x}$$

3 step solution

Problem 12

Find the derivative of each function. Verify some of your results by calculator. As usual, the letters \(a, b, c, \ldots\) represent constants. Power Function with Negative Exponent. $$y=2 x^{-3}$$

4 step solution

Problem 12

Find the derivative of each function. Check some by calculator. $$y=\left(a+\frac{b}{x}\right)^{3}$$

5 step solution

Problem 12

Evaluate each limit. $$\lim _{x \rightarrow 1} \frac{x^{3}-x^{2}+2 x-2}{x-1}$$

4 step solution

Problem 13

The velocity of a moving point is given by the first derivative of the displacement, and the acceleration is given by the second derivative of the displacement. Find the velocity and acceleration at \(t=1.55 \mathrm{s}\), of a point whose displacement is given by $$s=4.55 t^{3}+2.85 t^{2}+5.22 \quad \mathrm{cm}$$ where \(t\) is the elapsed time, in seconds.

4 step solution

Problem 13

Find \(d y / d x\). (Treat \(a\) and \(r\) as constants.) $$5 x-2 y=7$$

3 step solution

Problem 13

Some of these can be multiplied out. For a few of these, take the derivative both before and after multiplying out, and compare the two. $$y=\sqrt{x}\left(3 x^{2}+2 x-3\right)$$

6 step solution

Problem 13

Find the derivative of each function. Verify some of your results by calculator. As usual, the letters \(a, b, c, \ldots\) represent constants. Power Function with Negative Exponent. $$y=\frac{1}{x}$$

4 step solution

Problem 13

Limits Involving Zero or Infinity $$\lim _{x \rightarrow 0}\left(4 x^{2}-5 x-8\right)$$

3 step solution

Problem 13

Find the slope of the tangent or the rate of change at the given value of \(x\) $$y=\frac{1}{x^{2}} \text { at } x=1$$

2 step solution

Problem 13

Find the derivative of each function. Check some by calculator. $$y=\sqrt{1-3 x^{2}}$$

7 step solution

Problem 14

Find \(d y / d x\). (Treat \(a\) and \(r\) as constants.) $$2 x+3 y^{2}=4$$

4 step solution

Problem 14

Find the derivative of each function. Verify some of your results by calculator. As usual, the letters \(a, b, c, \ldots\) represent constants. Power Function with Negative Exponent. $$y=\frac{1}{x^{2}}$$

4 step solution

Problem 14

Limits Involving Zero or Infinity $$\lim _{x \rightarrow 0} \frac{3-2 x}{x+4}$$

3 step solution

Problem 14

Find the slope of the tangent or the rate of change at the given value of \(x\) $$y=\frac{1}{x+1} \text { at } x=2$$

3 step solution

Problem 14

Find the derivative of each function. Check some by calculator. $$y=\sqrt{2 x^{2}-7 x}$$

6 step solution

Problem 15

Find \(d y / d x\). (Treat \(a\) and \(r\) as constants.) $$x y=5$$

4 step solution

Problem 15

Some of these can be multiplied out. For a few of these, take the derivative both before and after multiplying out, and compare the two. $$y=\left(2 x^{2}-3\right) \sqrt[3]{3 x+5}$$

5 step solution

Problem 15

Find the derivative of each function. Verify some of your results by calculator. As usual, the letters \(a, b, c, \ldots\) represent constants. Power Function with Negative Exponent. $$y=\frac{3}{x^{3}}$$

4 step solution

Problem 15

Find the derivative of each function. Check some by calculator. $$y=\sqrt{1-2 x}$$

6 step solution

Problem 15

Find the slope of the tangent or the rate of change at the given value of \(x\) $$y=x+\frac{1}{x} \text { at } x=2$$

3 step solution

Problem 16

Find \(d y / d x\). (Treat \(a\) and \(r\) as constants.) $$x^{2}+3 x y=2 y$$

4 step solution

Problem 16

Find the derivative of each function. Verify some of your results by calculator. As usual, the letters \(a, b, c, \ldots\) represent constants. Power Function with Negative Exponent. $$y=\frac{3}{2 x^{2}}$$

3 step solution

Problem 16

Limits Involving Zero or Infinity $$\lim _{x \rightarrow 0} \frac{3+x-x^{2}}{(x+3)(5-x)}$$

3 step solution

Problem 16

Find the derivative of each function. Check some by calculator. $$y=\frac{b}{a} \sqrt{a^{2}-x^{2}}$$

8 step solution

Problem 16

Find the slope of the tangent or the rate of change at the given value of \(x\) $$y=\frac{1}{x} \text { at } x=3$$

3 step solution

Problem 17

Find \(d y / d x\). (Treat \(a\) and \(r\) as constants.) $$y^{2}=4 a x$$

5 step solution

Problem 17

Find the derivative of each function. Verify some of your results by calculator. As usual, the letters \(a, b, c, \ldots\) represent constants. Power Function with Fractional Exponent. $$y=7.5 x^{1 / 3}$$

5 step solution

Problem 17

Limits Involving Zero or Infinity $$\lim _{x \rightarrow 0}\left(\frac{1}{2+x}-\frac{1}{2}\right) \cdot \frac{1}{x}$$

4 step solution

Problem 17

Find the derivative of each function. Check some by calculator. $$y=\sqrt[3]{4-9 x}$$

7 step solution

Problem 17

Find the slope of the tangent or the rate of change at the given value of \(x\) $$y=2 x-3 \text { at } x=3$$

3 step solution

Problem 18

Find the derivative of each function. Verify some of your results by calculator. As usual, the letters \(a, b, c, \ldots\) represent constants. Power Function with Fractional Exponent. $$y=4 x^{5 / 3}$$

5 step solution

Problem 18

Limits Involving Zero or Infinity $$\lim _{x \rightarrow 0} x \cos x$$

5 step solution

Problem 18

Find the derivative of each function. Check some by calculator. $$y=\sqrt[3]{a^{3}-x^{3}}$$

5 step solution

Problem 18

Find the slope of the tangent or the rate of change at the given value of \(x\) $$y=16 x^{2} \quad \text { at } x=1$$

3 step solution

Problem 19

Find \(d y / d x\). (Treat \(a\) and \(r\) as constants.) $$x^{3}+y^{3}-3 a x y=0$$

6 step solution

Problem 19

Find the derivative of each function. Verify some of your results by calculator. As usual, the letters \(a, b, c, \ldots\) represent constants. Power Function with Fractional Exponent. $$y=4 \sqrt{x}$$

3 step solution

Problem 19

Limits Involving Zero or Infinity $$\lim _{x \rightarrow \infty} \frac{2 x+5}{x-4}$$

5 step solution

Problem 19

Find the derivative of each function. Check some by calculator. $$y=\frac{1}{\sqrt{x+1}}$$

4 step solution

Problem 19

Find the slope of the tangent or the rate of change at the given value of \(x\) $$y=2 x^{2}-6 \quad \text { at } x=3$$

3 step solution

Problem 20

Find \(d y / d x\). (Treat \(a\) and \(r\) as constants.) $$x^{2}+y^{2}=r^{2}$$

3 step solution

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