00:01
Definite integration is given as 0 to half of 10 x square divide with 1 minus x square power 3 by 2 dx.
00:17
So if i observe here we can easily say that it cannot be solved in this form.
00:22
So we have to convert it.
00:24
So we are converting into polar form putting x is equals to cos, if we put x is equals to sin theta.
00:32
If we replace x is equals to sin theta we get dx is equals to cos theta of d theta.
00:40
Now limits will be also changed when x is 0, theta is 0.
00:45
When x is 1 by 2, theta is pi by 6.
00:49
Now the integration is changed into 0 to pi by 6, 10 x x square is sin square theta divide with 1 minus sin square theta power 3 by 2.
01:06
Here cos theta d theta.
01:08
If we open the denominator term we will get it is 10 sin square theta into cos theta divide with 1 minus sin square is cos square and this square and this 2 will get cancelled only term left is 3.
01:25
So cos power 3 of theta and there is d theta.
01:29
This cos theta and this 3 will get cancelled.
01:33
The term left is 0 to pi by 6 here...