updating oE power
power
<built-in> function power(object base, object exponent)
raises a base value to some power.
Parameters:
- base : an object, the value or values to raise to some power.
- exponent : an object, the exponent or exponents to apply to base.
Returns:
An object, the shape of which depends on base's and exponent's. For two atoms, this will be base raised to the power exponent.
Errors:
If some atom in base is negative and is raised to a non integer exponent, an error will occur, as the result is undefined.
If 0 is raised to any negative power, this is the same as a zero divide and causes an error.
power(0,0) is illegal, because there is not an unique value that can be assigned to that quantity.
Comments:
The arguments to this function may be atoms or sequences. The rules for operations on sequences apply.
Powers of 2 are calculated very efficiently.
Other languages have a ** or ^ operator to perform the same action. But they do not have sequences.
Example 1:
? power(5, 2) -- 25 is printed
Example 2:
? power({5, 4, 3.5}, {2, 1, -0.5}) -- {25, 4, 0.534522} is printed
Example 3:
? power(2, {1, 2, 3, 4}) -- {2, 4, 8, 16}
Example 4:
? power({1, 2, 3, 4}, 2) -- {1, 4, 9, 16}
See Also:
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