# How to use vector plot and gradient vectors?

How do I plot a sampling of gradient vectors for fby using the vectorplot command? I’m confused how to use both these commands.

f[x_, y_] := (4 x^2 + y^2) Exp[-x^2 - y^2]

• @calculusbuff39 Try FindRoot with initial guess read of from the plots. – Henrik Schumacher Oct 18 '18 at 6:28