Question

If F:R-R,f(x)=x+3 and G:R-R,g(x)=2x findGof(3) and Gof(5)​

Answer 1

Step-by-step explanation:

We have f(x)=x3+3 & g(x)=2x+1

∴f−1(x)=(x−3)1/3 & g−1(x)=2(x−1)

∵f−1og−1(x)=f−1[g−1(x)]

∴f−1og−1(23)=f−1[g−1(23)]=f−1(11)

=(11−3)1/3=(8)1/3=2