Homework Help: Math

Posted by kelli on Sunday, February 21, 2010 at 5:40pm.

can someone sow me step by step how to evaluate the integral of the square root of x^3 using a u substitution? I dont understand this topic and I have a lot of problems to do like this so can someone just sow me so I can see the process? Thanks.

Math - Reiny, Sunday, February 21, 2010 at 6:03pm
You want the
integral [ √(x^3)] dx ?

= integral [x^(3/2)] dx
= (2/5)x^(5/2) + c

Why would you want to use substitution for one that simple?

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