Since, f:R → R and g:R → Rfog:R → R and gof:R → Rf(x) = 8x3 andNow, gof(x) = g(f(x)) = g(8x3)gof(x) = 2xfog(x) = 8xThus, gof(x) = 2x and fog(x) = 8x

RD Sharma - Volume 1

Exercise 2.1

Exercise 2.2

Exercise 2.3

Exercise 2.4

Very short answer

MCQ

Q. 1 F5.0( 2 Votes )

Find gof and fog

Answer :

Since, f:R → R and g:R → R

fog:R → R and gof:R → R

f(x) = 8x³ and

Now, gof(x) = g(f(x)) = g(8x³)

gof(x) = 2x

fog(x) = 8x

Thus, gof(x) = 2x and fog(x) = 8x

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