Question

I am trying to figure out how compute a math expression involving parenthesis and exponents in bash. Feel free to offer solutions using sed, awk, perl, bash

for example

 i=0.0545
 j=360
 (1+ $i * 2.43 / 100.0) ^ ($j/940) -1

How would you encoded in bash and get the floating point result?

Answer 1

Here it is in perl:

$ x=`perl -e 'print (1 + $ARGV[0] * 2.43 / 100.) ** ($ARGV[1] / 940.0) - 1' 0.0545 360.0`
$ echo $x
1.00132435