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April 19, 2014

April 19, 2014

Posted by **lydia** on Wednesday, February 29, 2012 at 9:35pm.

- Math please help urgent ! -
**lydia**, Wednesday, February 29, 2012 at 9:35pmslope**

- Math please help urgent !- derivative -
**MathMate**, Thursday, March 1, 2012 at 9:27amFirst find the derivative as a product:

d((10-sqrt x)(5+sqrt x))/dx

=(10-sqrt(x))((1/2sqrt(x))+(5+sqrt(x))(-1/2sqrt(x))

=(10-sqrt(x)-5-sqrt(x))/2sqrt(x)

=(5-2sqrt(x))/2sqrt(x)

Evaluate dy/dx at x=25

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