What is the inverse of the function? f(x)=3x f(x)=-3x f(x)=x^3 f(x)=x/3 ***** This function does not have an inverse I think it'
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I gather you're supposed to compute the integral of over a surface
that is the part of the parabolic cylinder
with
and
.
We can parameterize by
with the given constraints on and
. Take the normal vector to
to be
so that the surface element is
Then in the integral, we have