CS173: Intro to Computer Science - Functions (3 pts)
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Exercise Info
Goals
To write mathematical expressions in Java
To write a function that computes an expression and returns its result
To call a function from main() and use its return value
Instructions
Write a function that computes one of the roots of a quadratic equation. In addition to multiplying b by itself, you can compute b*b using the Math.pow() method. The Math.sqrt() method takes a double parameter, which is the number whose root should be computed, and returns the result as a double. Now write a program that calls a method that you will write to compute the quadratic root, and then have main() print the root that you calculate.
Quadratic Formula
For reference, the quadratic formula is:
\[\frac{-b \pm \sqrt{(b^{2} - 4ac)}}{2a}\]
given an equation:
\[ax^{2} + bx + c = 0\]
In this exercise, you can simply compute one of the roots, as follows: