Find the integration of : (x^3)/(sqrt(x^2+100)) I did the following work, but it seems my answer is not matching to the Wolfram|Alpha' answer. int x^3/(sqrt( x^2 +100)) dx - Wolfram|Alpha
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Originally Posted by racewithferrari Find the integration of : (x^3)/(sqrt(x^2+100)) I did the following work, but it seems my answer is not matching to the Wolfram|Alpha' answer. int x^3/(sqrt( x^2 +100)) dx - Wolfram|Alpha it is the same,..just in different form,..try to simplify it
Originally Posted by racewithferrari Find the integration of : (x^3)/(sqrt(x^2+100)) I did the following work, but it seems my answer is not matching to the Wolfram|Alpha' answer. int x^3/(sqrt( x^2 +100)) dx - Wolfram|Alpha Don't use a trig sub, use a hyperbolic sub. Let so that . Then the integral becomes Let so that The integral becomes Now convert it back to a function of .
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