(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

x = 5sin(2y +6) find dy in terms of x

2. Relevant equations

3. The attempt at a solution

dx/dy = 8 cos (2y+6)

dy/dx = 1 / (8cos(2y+6)

but according to the mark scheme the final answer is

+ or - 1 / (2 sqrt[16/x^2])

i dont see how on earth they got there :O

Can anyone? Thanks :)

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# Homework Help: Tricky Trig Differentiation

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