int(cos5x+cos4x)/(1-2cos3x)dx=-((1)/(2)sin2x+sin x)

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Prove that, int(cos 5x + cos4x)/(1-2cos 3x)dx= -(1/2 sin2x + sinx)+c

If int(cos5x+cos4x)/(1-2cos3x)dx=A(-sin2x)+B sin x+c then A+B=

int(cos 2x)/(1+sin x cos x)dx

If int((cos8x-cos7x)/(1+2cos5x))dx=(sin3x)/a-(sin2x)/b+c then the last digit of (a^b)^4 must be

int(cos x-sin x)/(1+sin2x)dx

int(sin2x)/((1-cos2x)(2-cos2x))dx=

int(3cos3x-2sin2x)/(cos2x+sin3x)dx

Prove : int cos x cos 2 x cos 3 x dx = 1/4 ( x+ (sin 2x)/2 + (sin 4x)/4 + (sin6x)/6 ) + c

If int cos x cos 2x cos 3x dx = A_(1)sin 2x + A_(2) sin 4x + A_(3) sin 6x + C then

int(cos x)/((1-sin x)(2-sin x))dx