Why do most mathematics literature use 2L for the period of a function? • Physics Forums

matqkks · 2015-03-09T20:09:56+00:00

[FONT=Helvetica Neue]Why do most mathematics literature use 2L for the period of a function? Is it related to heat equation with a rod of length L?

Thread 'How to Find Critical Points of function f(x,y,z)'

Hi everybody If we have not any answers for critical points after first partial derivatives equal to zero, how can we continue to find local MAX, local MIN and Saddle point?. For example: Suppose we have below equations for first partial derivatives: ∂ƒ/∂x = y + 5 , ∂ƒ/∂y = 2z , ∂ƒ/∂z = y As you can see, for ∇ƒ= 0 , there are not any answers (undefined)

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MHB Why do most mathematics literature use 2L for the period of a function?

Thread 'How to Find Critical Points of function f(x,y,z)'

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