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Find Gof And Fog When F : R → R And G : R → R Is Defined By F(X) = 8x3 And G(X) = X1/3. - Mathematics

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प्रश्न

Find gof and fog when f : R → R and g : R → R is  defined by  f(x) = 8x3 and  g(x) = x1/3.

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उत्तर

Given, f : R → R and g : R → R
So, gof : R → R  and fog : R → R

f(x) = 8x3 and g(x) = x1/3

(gof) (x)

= g (f (x))

= g (8x3)

=`(8x^3)^(1/3)`

= `[(2x)^3]^(1/3)`

= 2x

(fog) (x)

= f (g (x))

=` f (x^(1/3))`

=` 8 (x^(1/3))^3`

= 8x

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अध्याय 2: Functions - Exercise 2.2 [पृष्ठ ४६]

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आरडी शर्मा Mathematics [English] Class 12
अध्याय 2 Functions
Exercise 2.2 | Q 1.6 | पृष्ठ ४६

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