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February 28, 2015

February 28, 2015

Posted by **Randy** on Friday, June 17, 2011 at 1:15pm.

- Trig -
**Damon**, Friday, June 17, 2011 at 3:52pmdy/dx = 0 at max or min

0= -7 sin x + 24 cos x

7 sin x = 24 cos x

tan x = 24/7

x = 73.7 degrees

is that a max or a min?

d^2y/dx^2 = -7 cos x -24 sin x

that is negative so it is a maximum

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