The Student Room Group

Implicit Differentiation

My teacher gave me 0 marks for my answer to this but I literally can’t see where I’ve gone wrong. Question was to find the equation of the tangent at (1,1).

Might be out of spite tbh, my attendance is super low for that class. Hasn’t told me where I’ve gone wrong either. Can anyone check it please?
Reply 1
looks ok to me.
Original post by mqb2766
looks ok to me.

Cheers, thought it was fine.

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