# Prove that \$operatorname{grad}(f(u(x_1, …, x_m), v(x_1, …, x_m))) = frac{df}{du} operatorname{grad}u + frac{df}{dv} operatorname{grad}dv\$ Answer

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Prove that \$operatorname{grad}(f(u(x_1, …, x_m), v(x_1, …, x_m))) = frac{df}{du} operatorname{grad}u + frac{df}{dv} operatorname{grad}dv\$

$$operatorname{grad}(f(u(x_1, …, x_m), v(x_1, …, x_m))) = frac{partial f}{partial u} operatorname{grad}u + frac{partial f}{partial v} operatorname{grad} v$$

I don$$`$$t know the way to show that, ameliorate pls:(

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