DLMF:23.21.E2 (Q7382)

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Language	Label	Description	Also known as
English	DLMF:23.21.E2	No description defined

Statements

Defining formula

{\displaystyle{\displaystyle(\eta-\zeta)(\zeta-\xi)(\xi-\eta)\nabla^{2}=(\zeta% -\eta)f(\xi)f^{\prime}(\xi)\frac{\partial}{\partial\xi}+(\xi-\zeta)f(\eta)f^{% \prime}(\eta)\frac{\partial}{\partial\eta}+(\eta-\xi)f(\zeta)f^{\prime}(\zeta)% \frac{\partial}{\partial\zeta},}}

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DLMF:23.21.E2

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partial derivative of $$f$$ with respect to $$x$$

Defining formula

{\displaystyle{\displaystyle\frac{\partial\NVar{f}}{\partial\NVar{x}}}}

C1.S5.E3.m4adec

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partial differential of $$x$$

Defining formula

{\displaystyle{\displaystyle\partial\NVar{x}}}

C1.S5.E3.m2adec

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Defining formula

{\displaystyle{\displaystyle\xi}}

C23.S21.XMD1.m1dec

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Defining formula

{\displaystyle{\displaystyle\eta}}

C23.S21.XMD2.m1dec

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Sitelinks

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