# How can the composite function be evaluated?

Composite functions
How can the composite function be evaluated?

2020-11-30

Let f(x) and g(x) be two functions. The composite function $$\displaystyle{f}\circ{g}$$ can be calculated using the following steps:
1. Evaluate the value of inside function at the given point.
2. Then, take the resultant output as the input to outside function.
Here, $$[email protected][email protected] (x)=f(g(x))$$
Let us assume that the value of function g at point x is $$g(x)=t$$ where t is some constant
So, $$f(g(x))=f(t)$$
Let us assume that the value of f at point t is $$f(t)=u$$, where u is some constant. In this way, composite function can by evaluated.