What is ∫dxx\int \frac{dx}{x}∫xdx?
ln∣x∣+C\ln|x| + Cln∣x∣+C
x2/2+Cx^2/2 + Cx2/2+C
1/x2+C1/x^2 + C1/x2+C
ex+Ce^x + Cex+C