Question

Trigometric substitution question help? Anyone?

Answer 1

I gotchu

Answer 2

\[\int\limits \frac{ x ^{3} }{ \sqrt{49-x ^{2}} }dx\]

Answer 3

Not too sure how to solve this one!

Answer 4

let x = 7 sin(t)

Answer 5

ok

Answer 6

and my dx=cos(t)dt right?

Answer 7

yes

Answer 8

\[\frac{ x^3 }{ \sqrt{49-\sin^2(t)}}dt\]

Answer 9

see your integral becomes