Python Cube Root

Python Get Cube Root Using the Exponent Symbol
**

Python Get Cube Root Using the
pow()
Function 
Python Get Cube Root Using the
cbrt()
Function of the NumPy Library
This tutorial will explain different methods to get a cube of an integer or a float variable in Python. To get a cube root of a number in Python, we first need to know about how to get the exponent of a number and what operator is used to get the exponent of a number in Python. We will also see how to handle the negative numbers while calculating its cube root and what operator or method to use to get the cube root of a number in Python.
Python Get Cube Root Using the Exponent Symbol **
We can use **
symbol in Python to calculate an exponent of the number; it is also called the power operator. To calculate the cube root, we can set the power equal to 1/3
.
We should keep in mind that for some reason, the cube root of the negative numbers is not calculated correctly by this method. For example, the cube root of integer 27
should be 3
but Python returns 1.5000000000000004+2.598076211353316j
. This problem can easily be handled by ignoring the integer’s negative sign before calculating its cube root.
The below code example demonstrates how to calculate the cube root of positive as well as negative numbers in Python:
def get_cuberoot(x):
if x < 0:
x = abs(x)
cube_root = x**(1/3)*(1)
else:
cube_root = x**(1/3)
return cube_root
print(get_cuberoot(64))
print(get_cuberoot(64))
print(round(get_cuberoot(64)))
Output:
3.9999999999999996
3.9999999999999996
4
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As we can see in the above example, we may need to round the result to get the cube root’s exact value.