Question: The derivative of digital function is defined in terms of difference. Then, which of the following defines the second order derivative ?2 f/?x2 = ___________ of a one-dimensional function f(x)?
Options
A : f(x+1)-f(x)
B : f(x+1)+ f(x-1)-2f(x)
C : All of the mentioned depending upon the time when partial derivative will be dealt along two spatial axes
D : None of the mentioned
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