Example

> log(1)
        0
> b = exp(1)
 b =
     2.72
> log(b)
        1
> b^pi
     23.1
> log(b^pi)
     3.14
> a = rand(2,4)*20
 a =
       19         18       18.3       1.47  
     1.84       19.2       8.82       18.5  
> log(a)
     2.94       2.89       2.91      0.386  
    0.608       2.95       2.18       2.92