0 votes 0 votes The contour on the $x-y$ plane, where the partial derivative of $x^{2} + y^{2}$ with respect to $y$ is equal to the partial derivative of $6y+4x$ with respect to $x$, is $y=2$ $x=2$ $x+y=4$ $x-y=0$ Calculus gate2015-ec-3 calculus derivatives partial-derivatives + – Milicevic3306 asked Mar 27, 2018 • recategorized Feb 27, 2021 by Lakshman Bhaiya Milicevic3306 16.0k points 131 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.