logspace
Returns a set of points whose logarithms are equally spaced in a specified interval
y=logspace(a,b)
y=logspace(a,b,n)
Inputs
a any real positive number.
b any real positive number.
n The number of points to generate. The default value is 100.
Outputs
y A set of spaced points whose logarithms are equally spaced between a and b.