Question

How do you find the value of a function?

Short answer

The value of a function is the quantity assumed by the function for the values of the variable.

Step-by-step solution

Given information 

The value of a function .

The value of a function can be find by assume some value of the variable assumed to the function

Example to find value of a function 

Lets assume a function

$$\begin{gathered} f\left(x\right)=2x+5 \\ Let,x=3 \\ Substitutex=3inthegivenfunctionf\left(x\right)andfindf\left(3\right) \\ f\left(3\right)=2\left(3\right)+5 \\ f\left(3\right)=11 \end{gathered}$$

The value of the function at x=3 is 11

The value of the function is found by substituting the x value in the given function f(x)