- #1
RJLiberator
Gold Member
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Homework Statement
Double integral of y*e^(x^4-1)
with bounds
0=<y=<1
y^(2/3)=<x=<1
Homework Equations
The Attempt at a Solution
[/B]
Well, the first key thing to recognize is that we need the correct order for the bounds to compute this double integral.
So I switch it from x=y^(2/3) and x=1 TO y=x^(3/2) and y=1
and x=0 to x=1 becomes the x boundaries.
So now I integrate with respects to the y boundary first as that is the only way to solve this problem.
I get y^2/2*e^(x^4-1) from y=1 to y=x^(3/2)
This then becomes the integral from x=0 to x=1 of 1/2(e^(x^4-1)-x^3*e^(x^4-1))dx
And I am clueless on how to solve this. I've been trying to do u-substitution for a while now knowing that letting u = x^4-1 and du=x^3 I can work with something.
Did I do something wrong in my previous steps?