Oct 8, 2009 #1 the_ace Messages 7 Reaction score 0 1. use implicit differentiation to evaluate y(prime) for x^3+y^3=4xy+1 at the point (2,1)
Oct 8, 2009 #4 physicsnoob93 Messages 169 Reaction score 0 Yes you are right. Now, solve for Y and sub in the coordinates.
Oct 8, 2009 #5 HallsofIvy Science Advisor Homework Helper Messages 42,895 Reaction score 983 The derivative of y with respect to x is more commonly wriitten as y', not "Y".