Mini Bio (1) Brenna D'Amico is an actress, known for Descendants (2015), Descendants 2 (2017) and Descendants: Wicked World (2015). Other Works | Publicity Listings | Official Sites | Contact Info.
How to Find the Zeros of a Function. Three Methods: Finding Zeros by Factoring Finding Zeroes by Using the Quadratic Formula Finding Zeroes by Graphing. The zero of a function is a value of x that makes the value of function equal to zero. You usually try to find the zeros of a function to find an answer to a polynomial equation, such as x 2 + 4x +3 = 0. Follow these steps to learn several different ways how to find the zeros of a function. Ad.
The function has a maximum value at x = a if f '(a) = 0 and f ''(a) = a negative number. In the case of the maximum, the slope of the tangent is decreasing -- it is going from positive to negative. We can see that at the points C, A, D. Example 2. Let f (x) = 2 x 3 â 9 x 2 + 12 x â 3.