Chapter 23

Technical Mathematics with Calculus · 223 exercises

Problem 1

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. $$y=x\left(x^{2}-3\right)$$

4 step solution

Problem 1

Find the derivative of each function. Verify some of your results by calculator. As usual, the letters \(a, b, c, \ldots\) represent constants. Derivative of a Constant. $$y=8$$

3 step solution

Problem 1

Find the derivative of each function. Check some by calculator. $$y=(2 x+1)^{5}$$

6 step solution

Problem 1

Graph the given function. Then find the slope or rate of change of the curve at the given value of \(x\), either manually, by zooming in, by using the TANGENT feature on your calculator, or numerically, as directed by your instructor. $$y=x^{2} \quad \text { at } x=2$$

3 step solution

Problem 1

Evaluate each limit. $$\lim _{x \rightarrow 2}\left(x^{2}+2 x-7\right)$$

3 step solution

Problem 2

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. $$y=x^{3}(5-2 x)$$

6 step solution

Problem 2

Find the derivative of each function. Verify some of your results by calculator. As usual, the letters \(a, b, c, \ldots\) represent constants. Derivative of a Constant. $$y=\pi$$

2 step solution

Problem 2

Find the derivative of each function. Check some by calculator. $$y=\left(2-3 x^{2}\right)^{3}$$

6 step solution

Problem 2

Find the derivative by the delta method. $$y=4 x-3$$

3 step solution

Problem 2

Graph the given function. Then find the slope or rate of change of the curve at the given value of \(x\), either manually, by zooming in, by using the TANGENT feature on your calculator, or numerically, as directed by your instructor. $$y=-x^{2} \text{ at } x=3$$

3 step solution

Problem 2

Evaluate each limit. $$\lim _{x \rightarrow-1}\left(x^{3}-3 x^{2}-5 x-5\right)$$

3 step solution

Problem 3

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. $$y=x\left(x^{2}-2\right)^{2}$$

5 step solution

Problem 3

Find the derivative of each function. Verify some of your results by calculator. As usual, the letters \(a, b, c, \ldots\) represent constants. Derivative of a Constant. $$y=a^{2}$$

3 step solution

Problem 3

Derivatives with Respect to Other Variables. If \(w=y^{2}+u^{3},\) find \(d w / d u.\)

3 step solution

Problem 3

Find the derivative of each function. Check some by calculator. $$y=\left(3 x^{2}+2\right)^{4}-2 x$$

7 step solution

Problem 3

Graph the given function. Then find the slope or rate of change of the curve at the given value of \(x\), either manually, by zooming in, by using the TANGENT feature on your calculator, or numerically, as directed by your instructor. $$y=\sqrt{x} \quad \text { at } x=1$$

3 step solution

Problem 3

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

3 step solution

Problem 4

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. $$y=x(x-9)^{3}$$

4 step solution

Problem 4

Find the derivative of each function. Verify some of your results by calculator. As usual, the letters \(a, b, c, \ldots\) represent constants. Derivative of a Constant. $$y=3 b+7 c$$

4 step solution

Problem 4

Find the derivative of each function. Check some by calculator. $$y=\left(x^{3}+5 x^{2}+7\right)^{2}$$

6 step solution

Problem 4

Find the derivative by the delta method. $$y=7-4 x$$

4 step solution

Problem 4

Graph the given function. Then find the slope or rate of change of the curve at the given value of \(x\), either manually, by zooming in, by using the TANGENT feature on your calculator, or numerically, as directed by your instructor. $$y=\sqrt{x}+x^{2} \quad \text { at } x=2$$

3 step solution

Problem 4

Evaluate each limit. $$\lim _{x \rightarrow 5} \frac{5+4 x-x^{2}}{5-x}$$

4 step solution

Problem 5

Find, by hand, all of the terms in each probability distribuisn, and graph. $$y=3 x^{4}-x^{3}+5 x$$

3 step solution

Problem 5

Find the derivative of each function. Verify some of your results by calculator. As usual, the letters \(a, b, c, \ldots\) represent constants. Derivative of a Constant Times a Power Function. $$y=x$$

5 step solution

Problem 5

Find the derivative of each function. Check some by calculator. $$y=(2-5 x)^{3 / 5}$$

7 step solution

Problem 5

Graph the given function. Then find the slope or rate of change of the curve at the given value of \(x\), either manually, by zooming in, by using the TANGENT feature on your calculator, or numerically, as directed by your instructor. $$y=x-x^{2} \quad \text{ at } x=3$$

3 step solution

Problem 5

Evaluate each limit. $$\lim _{x \rightarrow 5} \frac{x^{2}-25}{x-5}$$

3 step solution

Problem 6

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. $$y=(7-2 x)(x+4)$$

5 step solution

Problem 6

Find the derivative of each function. Verify some of your results by calculator. As usual, the letters \(a, b, c, \ldots\) represent constants. Derivative of a Constant Times a Power Function. $$y=3 x$$

4 step solution

Problem 6

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

4 step solution

Problem 6

Find the derivative by the delta method. $$y=x^{2}-3 x+5$$

4 step solution

Problem 6

Graph the given function. Then find the slope or rate of change of the curve at the given value of \(x\), either manually, by zooming in, by using the TANGENT feature on your calculator, or numerically, as directed by your instructor. $$y=x^{2}-3 \quad \text { at } x=5$$

3 step solution

Problem 6

Evaluate each limit. $$\lim _{x \rightarrow-7} \frac{49-x^{2}}{x+7}$$

3 step solution

Problem 7

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. $$y=(x+3)(5 x-6)$$

9 step solution

Problem 7

Find the derivative of each function. Verify some of your results by calculator. As usual, the letters \(a, b, c, \ldots\) represent constants. Derivative of a Constant Times a Power Function. $$y=x^{7}$$

3 step solution

Problem 7

Graph the given function. Then find the slope or rate of change of the curve at the given value of \(x\), either manually, by zooming in, by using the TANGENT feature on your calculator, or numerically, as directed by your instructor. $$y=3-\sqrt{x} \quad \text{ at } x=1$$

3 step solution

Problem 7

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

3 step solution

Problem 8

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. $$y=(4 x-1)(3 x+3)$$

6 step solution

Problem 8

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

4 step solution

Problem 8

Graph the given function. Then find the slope or rate of change of the curve at the given value of \(x\), either manually, by zooming in, by using the TANGENT feature on your calculator, or numerically, as directed by your instructor. $$y=\sqrt{x}-x \quad \text{ at } x=4$$

3 step solution

Problem 8

Find the derivative of each function. Check some by calculator. $$y=\frac{31.6}{1-2 x}$$

6 step solution

Problem 8

Evaluate each limit. $$\lim _{x \rightarrow 5} \frac{x^{2}-12 x+35}{5-x}$$

3 step solution

Problem 9

Find the derivative \(d x / d y\) of \(x\) with respect to \(y.\) $$x=y^{2}-7 y$$

5 step solution

Problem 9

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. $$y=x^{3}\left(8.24 x-6.24 x^{3}\right)$$

5 step solution

Problem 9

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

4 step solution

Problem 9

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

6 step solution

Problem 9

Evaluate each limit. $$\lim _{x \rightarrow 0} \frac{\sin x}{\tan x}$$

5 step solution

Problem 10

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

4 step solution

Problem 10

Find the derivative of each function. Verify some of your results by calculator. As usual, the letters \(a, b, c, \ldots\) represent constants. Derivative of a Constant Times a Power Function. $$y=5.4 x^{3}$$

5 step solution

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