Results 1 to 6 of 6

- Jun 6th 2007, 01:29 PM #1

- Joined
- Jun 2007
- Posts
- 27

## DE question

im doing my DE HW and i dont understand how the book came out with an answer.. This is separable variables with an initial value.

(dx/dt) = 4(x^2+1) the intial value is: x((pi)/4)=1

the answer is: y= sin ((1/2)x^2+c)

and i have no idea where the sin came from...i know im probaly missing a rule somewhere, thanks for any help to get the jucices going!

- Jun 6th 2007, 01:57 PM #2

- Jun 6th 2007, 02:10 PM #3

- Jun 6th 2007, 02:12 PM #4

- Joined
- Nov 2005
- From
- New York City
- Posts
- 10,616
- Thanks
- 10

- Jun 6th 2007, 06:21 PM #5

- Joined
- Jun 2007
- Posts
- 27

- Jun 6th 2007, 06:25 PM #6

- Joined
- Jun 2007
- Posts
- 27