How to implement Linear Aproximation of a function

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Sultan
Sultan el 18 de Oct. de 2017
Comentada: Jonathan Brake el 3 de Mzo. de 2021
How one can translate the linear approximation of the function f(x,y) into MATLAB. The resulting approximation given by :
f(x,y) = f(x0,y0) + fx(x0,y0)(x-x0) + fy(x0,y0)(y-y0)
both x0 and y0 are known but how this can be translated into MATLAB

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Birdman
Birdman el 18 de Oct. de 2017
The attached file pplane8 might help you. This tool helps you to identify nonlinear two variable first order differential equations and find the equilibrium points and draw phase portraits.

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