`int tan^(4)x dx = A tan^(3) x+ B tan x + f(x)`, then

If int tan^(7) x dx = f(x) + C then

int(tan^(3)x-x tan^(2)x)dx

If int (dx)/(1- sin ^(4)x )= a tan x +b tan ^(-1) (c tan x )+ D, then:

int tan x tan2x tan3xdx

int tan2x tan3x tan5xdx

int tan2x tan3x tan5xdx

If f(x) = tanx-tan ^(3) x + tan^(5) x - tan ^(7) x + ... infty for olt x lt pi/4 , "than" int_(0)^(pi//4) f (x) dx=

(i) int tan^3 x dx (ii) int tan^4 x dx.

int x^(3)(tan^(-1)x)dx