Solution 11223: Calculating nth Roots Using the BA II PLUS™ or BA II PLUS™ PROFESSIONAL.
How do I perform nth root computations using the BA II PLUS or the BA II PLUS PROFESSIONAL?
The BA II PLUS and BA II PLUS PROFESSIONAL do not have an nth root key. However, it is possible to compute nth roots by raising the number to the reciprocal of the root. The example below will demonstrate how to perform nth root computations:
For Example: What is the fifth root of 243?
1) Input 243.
2) Press the [yx] key.
3) Input 5, and press the [1/x] key.
4) Press [=] to solve.
The calculator will display 3.