noun Mathematics. a value selected at a point in the domain of a multiple-valued function, chosen so that the function has a single value at the point.

How do you find the principal value?

We can rearrange the interest formula, I = PRT to calculate the principal amount. The new, rearranged formula would be P = I / (RT), which is principal amount equals interest divided by interest rate times the amount of time.

What is meant by principal value of a function?

In mathematics, specifically complex analysis, the principal values of a multivalued function are the values along one chosen branch of that function, so that it is single-valued. The simplest case arises in taking the square root of a positive real number.