Function: math[nondiff] - points of a function that are not differentiable

Calling Sequence:

nondiff(f, x);

Parameters:

f - any algebraic expression in x

x - a name

Description:

The function returns all those points at which the function f is continuous but not differentiable.

The return is a set.

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

Examples:

> with(math, nondiff):

> nondiff(abs(x), x);

[Maple Math]

> nondiff(abs(ln(x-3)), x);

[Maple Math]

> nondiff(arcsin(2*abs(x)*sqrt(1-x^2)), x);

[Maple Math]

See Also:

math/extrema , math/END , math/singularity , math/isCont , math/cont .

Version History:

Version 1.0 as of January 02, 1998

Version 1.01 as of February 21, 1998

Version 1.02 as of December 14, 1998