Evaluate: `int(sin^(2)x-cos^(2)x)dx`

Evaluate: int(sin^(2)x)/(cos^(6)x)dx

Evaluate: int(1)/(sin^(2)x cos^(2)x)dx

Evaluate: int(1-sin2x)/(x+cos^(2)x)dx

Evaluate: int(1)/(sin x cos^(2)x)dx

Evaluate: int(1)/(sin^(4)x cos^(2)x)dx

Evaluate: int(sin^(2)x)/(cos^(14)x)3dx

Evaluate: int(1-sin x)/(cos^(2)x)dx

Evaluate: ( i int(sin^(3)x-cos^(3)x)/(sin^(2)x cos^(2)x)dx (ii) int(5cos^(3)x+6sin^(3)x)/(2sin^(2)x cos^(2)x)dx

Evaluate: int1/(4sin^2x+5cos^2x)\ dx

Evaluate :int(dx)/(sin^(2)x cos^(2)x)