Could you solve the intergration, ∫x.tan(x)dx?
Can somebody solve this indefinite integral soon?
Please do not expand tanx as series of x
- ubiquitous_phiLv 71 decade agoFavourite answer
Try using the infinite series for tan(x) = x + x^3/3 + 2x^5/15 + ...
x*tan(x) = x^2 + x^4/3 + 2x^6/15 + ...
∫x.tan(x)dx = x^3/3 + x^5/15 + 2x^7/(7*15) + ...