\(\int \frac{e^x-e^{-x}}{e^x+e^{-x}}dx\)1\(\log|e^x-e^{-x}|+c\)2\(\log|e^x+e^{-x}|+c\)3\(e^x+c\)4\(e^{-x}+c\)Answer & explanation+Correct answer: option 2Put \(e^x+e^{-x}=t\)
