Wyznacz pochodne czastkowe rzedu pierwszego i rzedu drugiego funkcji f(x, y) =:
(a) arc tg y/x
(b) e^−(x2+y2)
a)
b)
pozdrawiam
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a)![\frac{\partial f}{\partial x}=\frac{x^2}{x^2+y^2}\cdot \frac{-y}{x^2}=\frac{-y}{x^2+y^2} \frac{\partial f}{\partial x}=\frac{x^2}{x^2+y^2}\cdot \frac{-y}{x^2}=\frac{-y}{x^2+y^2}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Cpartial+f%7D%7B%5Cpartial+x%7D%3D%5Cfrac%7Bx%5E2%7D%7Bx%5E2%2By%5E2%7D%5Ccdot+%5Cfrac%7B-y%7D%7Bx%5E2%7D%3D%5Cfrac%7B-y%7D%7Bx%5E2%2By%5E2%7D)
b)![\frac{\partial f}{\partial x}=e^{-(x^2+y^2}\cdot (-2x)=-2x\exp{[-(x^2+y^2)]} \frac{\partial f}{\partial x}=e^{-(x^2+y^2}\cdot (-2x)=-2x\exp{[-(x^2+y^2)]}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Cpartial+f%7D%7B%5Cpartial+x%7D%3De%5E%7B-%28x%5E2%2By%5E2%7D%5Ccdot+%28-2x%29%3D-2x%5Cexp%7B%5B-%28x%5E2%2By%5E2%29%5D%7D)
pozdrawiam
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"non enim possumus quae vidimus et audivimus non loqui