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Problem
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b) $\right)$ Find the directional derivative of $y\left(x,y,=\right)=xy^{3}+yz^{3}$ at the point $\left(2,-1,-3\right)$ in the direction of vector $2i$ $-3\bar{i} +42\bar{k} $ $\left(6M\right)$
Calculus
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Solution
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Qanda teacher - harshit
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any doubt pls do ask me