Which of the following is the antiderivative of f(x)=tan(x)f(x) = \tan(x)f(x)=tan(x)?
ln∣sec(x)∣+C\ln|\sec(x)| + Cln∣sec(x)∣+C
−ln∣cos(x)∣+C-\ln|\cos(x)| + C−ln∣cos(x)∣+C
ln∣cos(x)∣+C\ln|\cos(x)| + Cln∣cos(x)∣+C
sec2(x)+C\sec^2(x) + Csec2(x)+C