Chapter 13

A Graphical Approach to Precalculus with Limits · 250 exercises

Problem 14

Find the slope of the tangent line to each curve when \(x\) has the given value. Do not use a calculator. $$f(x)=\sqrt{2 x} ; x=2$$

4 step solution

Problem 14

Determine each limit, if it exists. $$\lim _{x \rightarrow-\sqrt{2}} x$$

4 step solution

Problem 14

Determine each limit. Refer to the accompanying graph of \(y=f(x)\) when it is given. Do not use a calculator. $$\lim _{x \rightarrow 0^{+}} \frac{|x|}{x}$$

3 step solution

Problem 15

Find the slope of the tangent line to each curve when \(x\) has the given value. Do not use a calculator. $$f(x)=4-x^{2} ; x=-1$$

3 step solution

Problem 15

Determine each limit, if it exists. $$\lim _{x \rightarrow 3} 4 x^{2}$$

4 step solution

Problem 15

Determine each limit. Refer to the accompanying graph of \(y=f(x)\) when it is given. Do not use a calculator. $$\lim _{x \rightarrow-3^{-}} \frac{|x+3|}{x+3}$$

5 step solution

Problem 16

Find the exact value of each integral, using formulas from geometry. Do not use a calculator. $$\int_{-3}^{3} \sqrt{9-x^{2}} d x$$

4 step solution

Problem 16

Find the slope of the tangent line to each curve when \(x\) has the given value. Do not use a calculator. $$f(x)=\frac{1}{x}+1 ; x=2$$

3 step solution

Problem 16

Determine each limit, if it exists. $$\lim _{x \rightarrow-2}\left(-3 x^{5}\right)$$

5 step solution

Problem 16

Determine each limit. Refer to the accompanying graph of \(y=f(x)\) when it is given. Do not use a calculator. $$\lim _{x \rightarrow-\infty} \frac{6 x^{2}+1}{2 x^{2}+3}$$ (GRAPH CANNOT COPY).

3 step solution

Problem 17

Find the exact value of each integral, using formulas from geometry. Do not use a calculator. $$\int_{-4}^{0} \sqrt{16-x^{2}} d x$$

4 step solution

Problem 17

Find the equation of the tangent line to each curve when \(x\) has the given value. Verify your answer by graphing both \(f(x)\) and the tangent line with a calculator. $$f(x)=x^{2}+2 x ; x=3$$

5 step solution

Problem 17

Determine each limit, if it exists. $$\lim _{x \rightarrow-1} 4 x^{3}$$

4 step solution

Problem 17

Determine each limit. Refer to the accompanying graph of \(y=f(x)\) when it is given. Do not use a calculator. $$\lim _{x \rightarrow \infty}\left(2+e^{-x}\right)$$ (GRAPH CANNOT COPY).

4 step solution

Problem 18

Find the exact value of each integral, using formulas from geometry. Do not use a calculator. $$\int_{1}^{3}(5-x) d x$$

3 step solution

Problem 18

Find the equation of the tangent line to each curve when \(x\) has the given value. Verify your answer by graphing both \(f(x)\) and the tangent line with a calculator. $$f(x)=6-x^{2} ; x=-1$$

5 step solution

Problem 18

Determine each limit, if it exists. $$\lim _{x \rightarrow 1}\left(5 x^{8}-3 x^{2}+2\right)$$

5 step solution

Problem 19

Find the exact value of each integral, using formulas from geometry. Do not use a calculator. $$\int_{2}^{5}(1+2 x) d x$$

6 step solution

Problem 19

Find the equation of the tangent line to each curve when \(x\) has the given value. Verify your answer by graphing both \(f(x)\) and the tangent line with a calculator. $$f(x)=\frac{5}{x} ; x=2$$

5 step solution

Problem 19

Determine each limit. Refer to the accompanying graph of \(y=f(x)\) when it is given. Do not use a calculator. $$\lim _{x \rightarrow \infty}\left(x+\frac{1}{x}\right)$$ (GRAPH CANNOT COPY).

4 step solution

Problem 19

Determine each limit, if it exists. $$\lim _{x \rightarrow 2}\left(x^{3}+4 x^{2}-5\right)$$

4 step solution

Problem 19

Use the table of values to predict \(\lim _{x \rightarrow 1} f(x)\) $$\begin{array}{|c|c|c|c|c|c|c|} \hline x & 0.9 & 0.99 & 0.999 & 1.001 & 1.01 & 1.1 \\ \hline f(x) & 1.9 & 1.99 & 1.999 & 2.001 & 2.01 & 2.1 \end{array}$$

3 step solution

Problem 20

Find the exact value of each integral, using formulas from geometry. Do not use a calculator. $$\int_{0}^{2} \sqrt{1-(x-1)^{2}} d x$$

4 step solution

Problem 20

Find the equation of the tangent line to each curve when \(x\) has the given value. Verify your answer by graphing both \(f(x)\) and the tangent line with a calculator. $$f(x)=\frac{-3}{x+1} ; x=1$$

5 step solution

Problem 20

Use a table and/or graph to find the asymptote\((s)\) of each function. $$f(x)=\frac{e^{x}}{e^{x}-1}$$

5 step solution

Problem 20

Determine each limit, if it exists. $$\lim _{x \rightarrow 3} \frac{x^{3}-1}{x^{2}+1}$$

3 step solution

Problem 20

Use the table of values to predict \(\lim _{x \rightarrow 2} f(x)\) $$\begin{array}{|c|r|r|r|r|c|c|} \hline x & 1.9 & 1.99 & 1.999 & 2.001 & 2.01 & 2.1 \\ \hline f(x) & -1.3 & -1.05 & -1.002 & -0.997 & -0.993 & -0.985 \end{array}$$

4 step solution

Problem 21

Find the exact value of each integral, using formulas from geometry. Do not use a calculator. $$\int_{1}^{4}(2 x-1) d x$$

5 step solution

Problem 21

Find the equation of the tangent line to each curve when \(x\) has the given value. Verify your answer by graphing both \(f(x)\) and the tangent line with a calculator. $$f(x)=4 \sqrt{x} ; x=9$$

5 step solution

Problem 21

Use a table and/or graph to find the asymptote\((s)\) of each function. $$\lim _{x \rightarrow \infty}\left(x \sin \frac{1}{x^{2}}\right)$$

7 step solution

Problem 21

Determine each limit, if it exists. $$\lim _{x \rightarrow-1} \frac{2 x+3}{3 x+4}$$

6 step solution

Problem 22

Find the exact value of each integral, using formulas from geometry. Do not use a calculator. $$\int_{-3}^{2}|x+1| d x$$

7 step solution

Problem 22

Find the equation of the tangent line to each curve when \(x\) has the given value. Verify your answer by graphing both \(f(x)\) and the tangent line with a calculator. $$f(x)=\sqrt{x} ; x=25$$

5 step solution

Problem 22

Use a table and/or graph to find the asymptote\((s)\) of each function. $$\lim _{x \rightarrow \infty}(\sqrt{x^{2}+x}-x)$$

4 step solution

Problem 22

Determine each limit, if it exists. $$\lim _{x \rightarrow 0} \frac{x^{2}+2 x}{x}$$

3 step solution

Problem 23

Find the exact value of each integral, using formulas from geometry. Do not use a calculator. $$\int_{-2}^{4}|x-2| d x$$

7 step solution

Problem 23

By considering the graph of the function but not calculating any limits, give the value of \(f^{\prime}(2)\) for each function. $$f(x)=5$$

3 step solution

Problem 23

Use a table and/or graph to find the asymptote\((s)\) of each function. $$\lim _{x \rightarrow \infty}(x-\sqrt{x^{2}+5})$$

4 step solution

Problem 23

Determine each limit, if it exists. $$\lim _{x \rightarrow 3} \frac{x^{2}-9}{x-3}$$

4 step solution

Problem 24

By considering the graph of the function but not calculating any limits, give the value of \(f^{\prime}(2)\) for each function. $$f(x)=x$$

4 step solution

Problem 24

Use a table and/or graph to find the asymptote\((s)\) of each function. $$f(x)=\frac{e^{x}}{e^{x}-1}$$

5 step solution

Problem 24

Determine each limit, if it exists. $$\lim _{x \rightarrow-2} \frac{x^{2}-4}{x+2}$$

4 step solution

Problem 24

Complete each table and use the results to predict the indicated limit, if it exists. $$\text { If } f(x)=\frac{\sqrt{x}-3}{x-3}, \text { find } \lim _{x \rightarrow 3} f(x)$$ $$\begin{array}{|c|l|l|l|l|l|l|} \hline x & 2.9 & 2.99 & 2.999 & 3.001 & 3.01 & 3.1 \\ \hline f(x) & & & & & & \end{array}$$

5 step solution

Problem 25

By considering the graph of the function but not calculating any limits, give the value of \(f^{\prime}(2)\) for each function. $$f(x)=-x$$

3 step solution

Problem 25

Determine each limit, if it exists. $$\lim _{x \rightarrow-2} \frac{x^{2}-x-6}{x+2}$$

4 step solution

Problem 25

Complete each table and use the results to predict the indicated limit, if it exists. If \(f(x)=\frac{\sqrt{x}-2}{x-1},\) find \(\lim _{x \rightarrow 1} f(x)\) $$\begin{array}{|c|c|c|c|c|c|c|} \hline x & 0.9 & 0.99 & 0.999 & 1.001 & 1.01 & 1.1 \\ \hline f(x) & & & & & & \end{array}$$

6 step solution

Problem 26

By considering the graph of the function but not calculating any limits, give the value of \(f^{\prime}(2)\) for each function. $$f(x)=3 x+4$$

4 step solution

Problem 26

Use a table and/or graph to find the asymptote\((s)\) of each function. $$f(x)=\frac{x-\cos x}{x+\sin x}$$

5 step solution

Problem 26

Determine each limit, if it exists. $$\lim _{x \rightarrow 5} \frac{x^{2}-3 x-10}{x-5}$$

4 step solution

Problem 26

Complete each table and use the results to predict the indicated limit, if it exists. $$\text { If } f(x)=\frac{x^{3}+3 x^{2}+x+3}{x+3}, \text { find } \lim _{x \rightarrow-3} f(x)$$ $$\begin{array}{|c|c|c|c|c|c|c|} \hline x & -3.1 & -3.01 & -3.001 & -2.999 & -2.99 & -2.9 \\ \hline f(x) & & & & & & \end{array}$$

5 step solution

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