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February 27, 2015

February 27, 2015

Posted by **Molly** on Thursday, February 28, 2013 at 2:29pm.

y'=

- calculus -
**Steve**, Thursday, February 28, 2013 at 3:32pmjust use the product and chain rules:

y' = -7e^-7x cos5x - 5e^-7x sin5x

= -e^-7x (7cos5x + 5sin5x)

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