To find value of (g∘f)(4)
The value of (g∘f)(4) is 5
From graph, f(4)=2
According to the definition of composite function,we know that:(g∘f)(x)=g(f(4))From the definition above ,we have:(g∘f)(4)=g(2)As we can see in the graph f(4)=2So,(g∘f)(4)=g(2)Once again,it is obvious that g(2)=5So finally we have:(g∘f)(4)=g(f(4))⇒(g∘f)(4)=g(2)⇒(g∘f)(4)=5
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