If x=t^3, y=2t^2 for t>0, then what does d^2y/dx^2 equal?

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- Feb 4th 2008, 01:25 PMchaddyparametric derivative
If x=t^3, y=2t^2 for t>0, then what does d^2y/dx^2 equal?

- Feb 4th 2008, 02:23 PMbobak

- Feb 4th 2008, 02:23 PMPlato
This is what the question is asking.

Step 1. Express**in terms of**.*t*

Step 2. find , i.e. the derivative of step 1 with respect to.**t**

Step 3. divide by . - Feb 4th 2008, 03:08 PMchaddy
So is this what I should do?

Step 1:

Step 2:

Step 3:

so the answer would be .

Is that right? - Feb 4th 2008, 03:31 PMbobak
- Feb 4th 2008, 03:51 PMchaddy
Okay, so

Step 2:

Step 3:

so the answer would be .

Is that right? - Feb 5th 2008, 12:24 AMbobak
Yeah that looks good to me.

- Feb 5th 2008, 12:36 AMmr fantastic