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November 28, 2015
Posted by **Jordan** on Thursday, October 4, 2012 at 2:40am.

- Calc -
**Reiny**, Thursday, October 4, 2012 at 9:07amsimplify it first

y = 2x^2 tanx / secx

= 2x^2 sinx/cosx * cosx

= 2x^2 sinx

then by product rule

dy/dx = (2x^2)cosx + 4x sinx