Where to find it:

NodeGraph / Right Mouse Click / Add Nodes / Math / Extension Pack / P /

pow returns the value of x raised to the y power, i.e. x^y

https://www.khronos.org/registry/OpenGL-Refpages/gl4/html/pow.xhtml

•X

Specify the value to raise to the power y

•Y

Specify the power to which to raise x

•Output RGB

Separate computation for Input Channels Red, Green, Blue with an Alpha Channel of 1.0

•R

Computation for Input Red channel only, saved into R, G and B channel with an Alpha of 1.0

•G

Computation for Input Green channel only, saved into R, G and B channel with an Alpha of 1.0

•B

Computation for Input Blue channel only, saved into R, G and B channel with an Alpha of 1.0

•A

Computation for Input Alpha channel only, saved into R, G and B channel with an Alpha of 1.0