Abs¶

Returns the absolute value of a number.

$ wo 'Abs[-5]'
5

$ wo 'Abs[5]'
5

$ wo 'Abs[0]'
0

The modulus of a complex number is reduced, pulling perfect-square factors out of the radical.

$ wo 'Abs[2 + 2 I]'
2*Sqrt[2]

For a power with a strictly-positive real base, Abs[b^z] reduces to b^Re[z], so an imaginary exponent leaves only the unit modulus.

$ wo 'Abs[Exp[2 I]]'
1

$ wo 'Abs[Exp[2 + 3 I]]'
E^2