# How can the composite function be evaluated?

How can the composite function be evaluated?
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Let f(x) and g(x) be two functions. The composite function $f\circ g$ 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, $f\circ g=f\circ g\left(x\right)=f\left(g\left(x\right)\right)$
Let us assume that the value of function g at point x is $g\left(x\right)=t$ where t is some constant
So, $f\left(g\left(x\right)\right)=f\left(t\right)$
Let us assume that the value of f at point t is $f\left(t\right)=u$, where u is some constant. In this way, composite function can by evaluated.