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Find Fog And Gof If : F(X) = C, C ∈ R, G(X) = Sin X2.

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प्रश्न

Find fog and gof  if : f(x) = c, c ∈ R, g(x) = sin `x^2`

योग
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उत्तर

f (x) = c, g (x) = sin x2

f : R → {c} ; g : R→ [ 0, 1 ]

Computing fog :

Clearly, the range of g is a subset of the domain of f.

fog : R→R

(fog) (x) = f (g (x))

= f (sin x2)

= c

Computing gof :

Clearly, the range of f is a subset of the domain of g.

⇒ fog : R→ R

(gof) (x) = g (f (x))

= g (c)

= sin c2

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अध्याय 2: Functions - Exercise 2.3 [पृष्ठ ५४]

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आर.डी. शर्मा Mathematics Volume 1 and 2 [English] Class 12
अध्याय 2 Functions
Exercise 2.3 | Q 1.8 | पृष्ठ ५४

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