`int(sin^(2)x)/(cos^(4)x)dx`

int(cos^(2)x)/(sin^(4)x)dx

int(sin x)/(cos^(4)x)dx

int(4-5sin x)/(cos^(2)x)dx

4int(1+sin^(2)2x)/(1+cos4x)dx=

int(cos^(4)x)/(sin^(2)x)dx

int(sin2x)/(sin^(4)x+cos^(4)x)dx

int(sin2x)/(sin^(4)x+cos^(4)x)dx

Find the following integrals: ( i ) int(sin x+cos x)dx( ii) int cos ecx(cos ecx+cos x)dx( iii) int(1-sin x)/(cos^(2)x)dx

int(sin2x)/(sin^4x+cos^4x)dx