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Question

If f(x)=|x25x+6|, then f(x) equals

A
2x5 for 2<x<3
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B
52x for 2<x<3
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C
2x5 for x<2
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D
52x for x<3
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Solution

The correct options are
B 52x for 2<x<3
C 2x5 for x<2
We know that,
|x25x+6|=|(x3)(x2)|
So the function will be,
f(x)={x25x+6 if x3 or x2(x25x+6) if 2<x<3f(x)={2x5 if x>3 or x<22x+5 if 2<x<3

f(x) is non-differentiable at x=2 & x=3

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