\hspace{-16}\bf{(1)\;\; \int\frac{1}{(1+x^4)^{\frac{1}{4}}}dx}$\\\\\\ $\bf{(2)\;\; \int\frac{1}{(1-x^4)^{\frac{1}{4}}}dx}$\\\\\\ $\bf{(3)\;\;\int\frac{1}{(1+x^4)}dx}$\\\\\\ $\bf{(4)\;\;\int\frac{1}{(1+x^6)}dx}$
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3 Answers
1357third take x2 common and then try to form square of (x+1/x) or (x-1/x) and proceed
1357fourth one method is partial fraction
man111 singh Thanks Sir.Upvote·0· Reply ·2013-10-25 11:55:55