Question Number 167896 by SANOGO last updated on 28/Mar/22
$${prouver}\:{que}\: \\ $$$${f}\left({x},{y}\right)={x}^{\mathrm{2}} +{y}^{\mathrm{2}} {est}\:{differentiable} \\ $$
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Question Number 167896 by SANOGO last updated on 28/Mar/22 | ||
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$${prouver}\:{que}\: \\ $$$${f}\left({x},{y}\right)={x}^{\mathrm{2}} +{y}^{\mathrm{2}} {est}\:{differentiable} \\ $$ | ||