If the function f:R->R be given byfo) 8x and g R-> R be given byg(x)x – InterviewSolution

1.

If the function f:R->R be given byfo) 8x and g R-> R be given byg(x)x 3. Find fo g and go f.(3)

Answer»

fog = f(g(x)) = 8(x^1/3)^3= 8x

gof = g(f(x)) = (8x^3)^1/3= [(2x)^3]^1/3= 2x

I didn't understand

find r if 25cr+3= 25c2r-3

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