Function: math[isDiff] - checks whether a function is differentiable at a point

Calling Sequence:

isDiff(fn, x=a);

Parameters:

fn - any algebraic expression in x

x - a name
a - a point (numerical value)

Description:

isDiff checks whether a function fn is differentiable at a point a, it returns true if it is differentiable and false otherwise.

This function is part of the math package, and so can be used only after performing the command with(math) or with(math, isDiff).

Examples:

> with(math):

> isDiff(abs(x), x=0);

[Maple Math]

> isDiff(x^2, x=0);

[Maple Math]

See Also:

isCont , cont .

Version History:

Version 1.0 as of January 01, 1998