To use the **exponentiation (^) button**, it is required to enter two inputs, value and exponent or you can pre-set the exponent to any number.

Similarly, the **log button** requires inputs for value and base. The **pi button** doesn't require any input; it holds the value of pi (3.142).

Below are examples for ^, log, and pi button.

`'use strict'; return { exp_o: Math.pow(inputs.input_exp,inputs.input_exp_z), log_o: Math.log(inputs.log_input, 10), pi_value: Math.PI, };`