====== Description ======
The pow node is used to raise the value of the first (leftmost, the base) child-node to the value of the second (rightmost, the exponent) child-node.

====== Constraints ======
  * Minimum number of child-nodes: 2
  * Maximum number of child-nodes: 2
  * Valid input range: if the base ''<'' 0, the exponent must be ''>''= 0
  * Note: results can overflow given suitably large input values

====== Calculus ======

<m>value={value_1}^{value_2} </m>