Differentiate expression

**astrostar** · May 8th 2008, 11:14 AM

Hi all,

I need to differentiate this expression twice to find a new expression when t = 0.6

y = 3sin (5 pi t)

t = 0.6

(pi = 3.14)

Any help appreciated.

**icemanfan** · May 8th 2008, 11:18 AM

Originally Posted by astrostar

Hi all,

I need to differentiate this expression twice to find a new expression when t = 0.6

y = 3sin (5 pi t)

t = 0.6

(pi = 3.14)

Any help appreciated.

$\frac{dy}{dx} = 15\pi \cos{(5\pi t)}$

$\frac{d^2y}{dx^2}$ = $-75\pi ^2 \sin{(5\pi t)}$

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