Implict differentiation: 2cosysinx=1

Hello,

The question is to find the equation of the normal to the curve at .

I'm not confident with implicit differentiation, but using the product rule I got:

My question is, is it correct to write the derivative of with respect to as as I have done.

Thank you.

Re: Implict differentiation: 2cosysinx=1

Hey Furyan.

Your working looks good for the implicit differentiation.

Re: Implict differentiation: 2cosysinx=1

Hey chiro,

That's a relief, thank you very much for looking it over :)