Question

how do you evaluate the indefinite integral: x^4 √2+x^5 dx ??

Answer 1

let √2+x^5 = u

Answer 2

and then what do you do with x^4?

Answer 3

du = 5x^4 dx

Answer 4

1/5 (5x^4 dx)/ (sqrt(2)+x^5)
1/5 du/u

Answer 5

is 1/5 du/u the answer ?

Answer 6

no integrate it ... i think you know how to integrate it.

Answer 7

wher yu get 1/5 from?

Answer 8

(5x^4 dx)/5(sqrt(2)+x^5) multiplied both top and bottom.

Answer 9

1/5 5x^5/5 / 2x^5/4 + c, is that correct?

Answer 10

no ... you did not integrate
your answer will be
1/5 ln ( sqrt(2) + x^5) + C <--- try checking on wolfram.

Answer 11

whats the answer though ?

Answer 12

http://www.wolframalpha.com/input/?i=integrate++x%5E4%2F%28+%E2%88%9A2%2Bx%5E5%29+dx

Click on ... show steps to view the steps.

Answer 13

Well, what do you need help with?
Looks, like someone answered it..

Answer 14

i still dont know the answer!

Answer 15

The link gives you the answer..
or you don't know how to do it?

Answer 16

oh thanks!