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Question

What is the value of fo(fog)o(gof) (x)

A
x
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B
x2
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C
2x + 3
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D
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Solution

The correct option is C 2x + 3

Option (c)

fo(fog)0(gof) (x)

We have, fog (x) = gof (x) = x

So given expression reduces to f(x), that is, 2x + 3


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