Please do not expand tanx as series of x
Greetings,
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) + ...
Regards
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Greetings,
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) + ...
Regards