How to plot the Gradient direction of a function at a different points on the function?

I plot an ellipse by using

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ezplot('4*x^2+y^2=10'); 
axis equal;

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Now I want to show the gradient direction at different points on the ellipse like the following figure. Please provide suggestions. How can it be done by writing proper code?

Answer 1

[madhan ravi]

quiver()

[Rudrashis Majumder]

Thanks a lot. I am trying to explore it.

[madhan ravi]

Anytime :)