Please confirm rms value of this function

MAC-A-TAC

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Jan 9, 2009
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Hello.

Please review my work for the following problem. Is my solution correct?
Find the rms value of the function i = 15(1 - e[sup:2qefwb64]-1/2t[/sup:2qefwb64] from t = 0 to t = 4.
 

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When I put the function into my calculator, I found the integral equals approximately 342.680... Dividing by 4, the result is 85.670... Then taking the square root yields 9.2558...

Your work seems correct.
 
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