What is the double derivative(y") of x^2+y^2=25

Thank you!

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- Jan 23rd 2010, 09:18 PMjupiter92What is the double derivative(y") of x^2+y^2=25
What is the double derivative(y") of x^2+y^2=25

Thank you! - Jan 23rd 2010, 09:45 PMEternal Calculus Student
dy/dx of x^2 + y^2 = 25 is gonna be 2x + 2y(dy/dx)=0

Simply take the second derivitive of that to find your answer.

This is assuming that y is your dependent variable mind you, if y is the independent then you will be finding dx/dy and it will be 2x(dy/dx) + 2y=0 - Jan 23rd 2010, 09:55 PMjupiter92
Thank you!