Directional Derivative – Calculating Derivative – Exercise 4279

Exercise

Calculate the directional derivative of the function

z=x2xy+y2z=x^2-xy+y^2

At point (1,1) and in the vector direction

a=6i+8j\vec{a}=6\vec{i}+8\vec{j}

Final Answer


Daz(1,1)=1.4D_{\vec{a}} z(1,1)=1.4

Solution

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