Question

Evaluate the integral by making the given substitutionhttp://www.webassign.net/cgi-bin/symimage.cgi?expr=int%20x%2A%2A%283%29%283%20%2B%20x%2A%2A%284%29%29%2A%2A5%20text%28%20%29%20dx%20text%28%2C%20%29%20u%20%3D%203%20%2B%20x%2A%2A%284%29

Answer 1

please show steps thanks inadvance

Answer 2

If
u= 3+x^4
then,
finding the derivative of u, yields
du = 4*(x^3)dx
therefore,
du/4 = (x^3)dx.
Now substitute (x^3)dx by du/4,
we get,
\[\int\limits_{?}^{?}\]u^5du/4
= u^6/(6*4)

hope this helps!