Integral of cos^2(x)/sin^2(x)

Integral of (x-arctan(x))/(1+x^2)

Integral of x/e^(x^2)

(Method 2) Integral of 1/x*(x^2-1)

Integral of x*arctan(2x)

Integral of sqrt(cos(x)/sin^5(x))

Integral of sin(x)/(3+2cos(x))^2

Integral of tan^5(x)/cos^2(x) (substitution)

Integral of (2x+7)/(4+(1+x)^2) (substitution)

Integral of x*ln(x+sqrt(1+x^2))/sqrt(1+x^2) (by parts)

Integral of sqrt(1-x)/(x+sqrt(x)) (substitution + substitution)

Integral of e^(1/x)/x^4 (substitution)

Integral of 1/tan^2(x)

Integral of x/(1+4x^4) (substitution)

Integral of x^2/(4x^2+1)

Integral of (2x)*e^(x^2) (substitution)

Integral of e^(sqrt(x))*cos(e^sqrt(x))/sqrt(x) (substitution)

Integral of (2x-3)/(2x^2-6x+5) (substitution)

Integral of 1/(1+e^(3x)) (substitution)

Integral of 1/tan^3(x) (substitution)

Integral of (x^2)*sin(3x) (by parts)

Integral of 3^x/e^x (substitution)

Integral of e^(2x)/(3-e^x) (substitution)

Integral of 1/(8+x^2) (substitution)

Integral of (x+sqrt(x))/(sqrt(x)+1)