php use of decimal exponent -


i working in php , using mathcad formulate equation. equation requires number raised irrational exponent in exponent iterates decimal. exponent includes variable array , other decimals end decimal through each array iteration. can't equation output.

i using 

$delta_graph = .1;$var1 = .497;# $s = if lower: shift right , higher.    $var2 = 109.94;# $e = if lower: right , left higher @ diff. rates. $var3 = 3.615;# $m = if higher: shift left , lower , flatten left. $data = array(); ($x = 0; $x <= 120; $x+= $delta_graph)# $x + n = if higher: curve shifts left , higher.   $data[] = array('', $x, $sbs_now2 + ((19050.6/$x*$var1*sqrt(2*m_pi))*(pow($var2,-.5*pow(log($x+3.6)-$var3,2))/2*pow($s,2))-0.041)); # first constant: if higher: peak higher  final constant: if higher: curve lower

, $x variable array iterates decimals. exponent of first pow decimal. second pow has 2 exponent. decimal allowed exponent, there missing, , if not, there hack?

my research, here , on internet, indicates whole number possibly required have not found definite answer.

my full coding has been tested.

thank all,

gary


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