Find all the roots of the given function on the given interval. Use pre-liminary analysis and graphing to find good initial approximations. f(x) = cos (4x) - 4x2 + 9x

The roots for are and , respectively.

Step-by-step explanation:

A root is a value of so that . Let suppose that function is the consequence of the subtraction between two functions, that is:

(1)

If we know that , and , then we have the following identity:

We can estimate graphically the roots of by graphing the following system:

(2)

(3)

Where roots are the points in which functions find each other.

With the help of a graphing, we estimate two solutions:

,

the answe i =−n+5

i dont know nkw

step-by-step explanation:

kenffledkedncklzkdfeserw