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Question

If f and g are two functions over real numbers defined as f(x) = 3x + 1, g(x) = x2 + 2, then find f-g


A

3x + x2

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B

x2+1-3x

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C

x2+1

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D

3x – x2-1

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Solution

The correct option is D

3x – x2-1


f - g = (3x + 1) – (x2 + 2) = 3x – x2-1


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