1. ## Question about derivative function

Hello everyone,

I have a function for which I must first find the derivative implcite.
x ^ 3 + y ^ 3 = 6XY, nothing fancy so far:

However, just after i been asked to calculate y'(0)?

I think so, y'(0) = 2/y ! I stuck there because it seems I need a number. So without a variable. Any an idea?

thank you

2. have a look at the graph of the relation ...