Find gof and fog when f: R → R and g : R → R is defined by f(x) = 8x3 and  g(x) = \( x^{\dfrac{1}{3}}\)

Asked by Sakshi | 1 year ago |  50

1 Answer

Solution :-

Given, f: R → R and g: R → R

So, gof: R → R and fog: R → R

f(x) = 8x3 and g(x) = \( x^{\dfrac{1}{3}}\)

(gof) (x) = g (f (x))

= g (8x3)

\(( 8x^3) x^{\dfrac{1}{3}}\)

\( ( 2x^3) x^{\dfrac{1}{3}}\)

= 2x

Now, (fog) (x) = f (g (x))

\(f( x^{\dfrac{1}{3}})\)

\( 8( x^{\dfrac{1}{3}})^3\)

= 8x

Answered by Aaryan | 1 year ago

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