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October 25, 2014

October 25, 2014

Posted by **ck** on Saturday, February 11, 2012 at 10:43am.

- calculus -
**Reiny**, Saturday, February 11, 2012 at 11:25amdifferentiate implicitly

cos(x+y) (1 + dy/dx) = x dy/dx + y

at (0,0_

cos(0)(1+dy/dx) = 0+0

1(1+dy/dx) = 0

dy/dx = -1

so slope is -1 , and y-intercept is 0

equation of tangent: y = -x

- calculus -
**ck**, Saturday, February 11, 2012 at 4:09pmThank you!!!

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