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klyn.math.NDArray.pow
method
public pow(other as NDArray<T>) as NDArray<Double>:
Description
Raises each element to the matching power array. The result is materialized as `NDArray<Double>`. 
a = NDArray<Int>.fromList([2, 3])
b = NDArray<Int>.fromList([3, 2])
print(a.pow(b))  # [8.0, 9.0]