- #1

MeMoses

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## Homework Statement

If u=x^3 + 3xy + y^3, determine du/dx on the ellipse 2x^2+3y^2=1

**2. The attempt at a solution**

Imagine I just use partial derivative somehow, but I'm not sure what the question is asking by on the ellipse. I have a feeling its just something simple that I'm overlooking. Any help is appreciated. Thanks