int(5x^(8)+7x^(6))/((x^(2)+1+2x^(7))^(2))dx=

int(5x^(8)+7x^(6))/(x^(2)+1+2x^(7))dx is equal to (a) (x)/(x^(2)+1+2x^(7))+C( b) (x^(7))/(x^(2)+1+2x^(7))+C (c) (x^(6))/(x^(2)+1+2x^(7))+C(d)x^(2)+1+2x^(7)+C

int (7x^(8)+8x^(7))/((1+x+x^(8))^(2))dx=f(x)+c rArr f(x)=

int(2x+1)/((x^(2)+x+7)^(2))dx

f(x)=int(5x^8+7x^6)/(x^2+1+2x^7)^2dx , if f(0)=0 then find f(1)=1/k. Then k is

int(2x^(4)+7x^(3)+6x^(2))/(x^(2)+2x)dx

int(dx)/(8-7x^2)=

int(5x^8+7x^6)/(x^2+1+2x^7)^2dx is equal to (a) x/(x^2+1+2x^7)+C (b) x^7/(x^2+1+2x^7)+C (c) x^6/(x^2+1+2x^7)+C (d) x^2/(x^2+1+2x^7)+C

int (6x^(3) + 5x^(2)-7)/(3x^(2)-2x-7)dx

int(4x^(5)-7x^(4)+8x^(3)-2x^(2)+4x-7)/(x^(2)(x^(2)+1)^(2))dx

Evaluate: (i) int(x^(3)-3x^(2)+5x-7+x^(2)a^(x))/(2x^(2))dx (ii) int(cos x)/(1+cos x)dx