" 19.(i) "int(dx)/(sin x(3+2cos x))" (ii) "int

I=int(dx)/(sin x cos^(3)x)

Evaluate: (i) int(1)/(sin^(3)x cos^(5)x)dx (ii) int(1)/(sin^(3)x cos x)dx

Evaluate : (i) int(dx)/((1+3sin^(2)x)) (ii) int(dx)/((3+2cos^(2)x))

Evaluate: (i) int(1+cos x)/((x+sin x)^(3))dx (ii) int(cos x-sin x)/(1+sin2x)dx

Evaluate: (i) int(sin x)/((1+cos x)^(2))dx (ii) int cot x log sin xdx

Evaluate the following integrals: (i) int 2x sqrt(1 + x^2)dx " " (ii) int e^(-x^2) x dx " " (iii) int (sin x)/(1 + cos x) dx (iv) int 1/(1 + x^2)dx " " (v) int x (a - x)^8 dx .

I= int(dx)/( sin^(2) x cos^(2) x)

(i) int (sin x)/(1+ cos x) dx. (ii) int (sin x)/(1+ cos x)^2 dx.

Evaluate: (i) int(1-sin x)/(x+cos x)dx (ii) int(a)/(b+ce^(x))dx

Evaluate: (i) int(sin2x)/((a+b cos2x)^(2))dx (ii) int(log x^(2))/(x)dx