integrate

hey i got the ans, do u know how to use latex here in this forum.so that i can post the solun.

first of all rationalise and then split it into two terms
in first term put x²=t & in second term put x⁴=u

u can also proceed bt taking x = a tanθ,
after this use 2nd substitution by taking cos2θ = t²

u will get the ans

hey this one is simple..

jus substitute... x² = a² cos2θ ... bus then proceed...

(wenever there is x²+a² only, put x=atanθ
but if both x²+a² and x²-a² are there, then most of the times x²=a²cos2θ substitution helps...)