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October 9, 2015
Posted by **cel** on Sunday, October 31, 2010 at 4:03am.

cos(x-2y) = 3y

for the answer, i got..

dy/dx = (-sin(x-2y)) / (3-2sin(x-2y))

but i'm not sure if it's right..

- AP Calculus -
**Reiny**, Sunday, October 31, 2010 at 8:58amyou are correct! good job

I had it as

sin(x-2y)/(2sin(x-2y) - 3) , which is the same thing.