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1. |
Evaluate:`int(x^2)/(x^6-a^6)dx` |
Answer» Correct Answer - `(1)/(3)(1)/(2a^(3))"log"_(e)|(x^(3)-a^(3))/(x^(3)+a^(3))|+C` `I=int(x^(2))/(x^(6)-a^(6))dx` ` "let "x^(3)=t` ` :. 3x^(2)dx=dt` ` :. I=(1)/(3)int(dt)/(t^(2)-a^(6))=(1)/(3)(1)/(2a^(3))"log"_(e)|(t-a^(3))/(t+a^(3))|+C` `=(1)/(3)(1)/(2a^(3))"log"_(e)|(x^(3)-a^(3))/(x^(3)+a^(3))|+C` |
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