Evaluate ∫1xdx\int \frac{1}{x} dx∫x1dx.
ex+Ce^x + Cex+C
x2/2+Cx^2/2 + Cx2/2+C
ln∣x∣+C\ln|x| + Cln∣x∣+C
ln(x)+C\ln(x) + Cln(x)+C