$f = y^2-x^2+x^3$ I want to find all points $(x_0,y_0)$ such for some neighbor set $f(x,y) = f(x_0,y_0)$ is set $x=\varphi(y), \varphi \in C^{\infty}, \varphi(y_0)=x_0$.
2026-03-28 09:43:44.1774691024
Contour lines and implicit function theorem
87 Views Asked by Bumbble Comm https://math.techqa.club/user/bumbble-comm/detail AtRelated Questions in MULTIVARIABLE-CALCULUS
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