Solve y′=sec2(x)y' = \sec^2(x)y′=sec2(x).
y=tan(x)+Cy = \tan(x) + Cy=tan(x)+C
y=sec(x)+Cy = \sec(x) + Cy=sec(x)+C
y=ln∣cosx∣+Cy = \ln|\cos x| + Cy=ln∣cosx∣+C
y=sin(x)y = \sin(x)y=sin(x)