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