abs
abs(X) returns the absolute value of each element of X.
Examples
> abs(-2)# 2
> abs([-2 3 -1.2])# 2 3 1.2
> abs(2 + i)# 2.23607
> x = -5 : 5 [x:1x11 double] > plot(x, abs(x)) [ans:1x1 struct]
> abs(-2)# 2
> abs([-2 3 -1.2])# 2 3 1.2
> abs(2 + i)# 2.23607
> x = -5 : 5 [x:1x11 double] > plot(x, abs(x)) [ans:1x1 struct]