Powershell script for PDOL - OPTIP problem

gistfile1.ps1

echo "running powershell script! got " $args[0] "as input file and " $args[1] " as output file!"

$data = import-csv $args[0]

$x1 = (0+$data.x1)
$x2 = (0+$data.x2)

#program mimmicks what's in the SC function, except I added an x3 to it,
#and it has no constraints
$output = 4*$x1*$x1 `
  	- 21/10*[System.math]::pow($x1, 4) `
		+ 1/3*[System.math]::pow($x1, 6) `
		+ $x1*$x2 `
		- 4*[System.math]::pow($x2, 2) `
		+ 4*[System.math]::pow($x2, 4) `

"" + "output" + "," + "`n"  `
   + $output  + "," `
		> $args[1]

exit