Chapter 1: Problem 72
Solve the inequality for \(x\). $$ 1<\ln x<100 $$
Chapter 1: Problem 72
Solve the inequality for \(x\). $$ 1<\ln x<100 $$
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Get started for freeFind all values of \(c\) such that \(f\) is continuous on \((-\infty, \infty)\). \(f(x)=\left\\{\begin{array}{ll}1-x^{2}, & x \leq c \\ x, & x>c\end{array}\right.\)
(a) Prove that if \(\lim _{x \rightarrow c}|f(x)|=0,\) then \(\lim _{x \rightarrow c} f(x)=0\). (Note: This is the converse of Exercise \(74 .)\) (b) Prove that if \(\lim _{x \rightarrow c} f(x)=L,\) then \(\lim _{x \rightarrow c}|f(x)|=|L|\). [Hint: Use the inequality \(\|f(x)|-| L\| \leq|f(x)-L| .]\)
Verify that the Intermediate Value Theorem applies to the indicated interval and find the value of \(c\) guaranteed by the theorem. $$ f(x)=\frac{x^{2}+x}{x-1}, \quad\left[\frac{5}{2}, 4\right], \quad f(c)=6 $$
Sketch the graph of the function. Use a graphing utility to verify your graph. $$ f(x)=\operatorname{arcsec} 2 x $$
Does every rational function have a vertical asymptote? Explain.
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