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Question

The values of x for which the function

f(x) = x23x4x2+3x4 is NOT continuous are

A
4 and -1
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B
4 and 1
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C
-4 and 1
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D
-4 and -1
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Solution

The correct option is C -4 and 1
For discontinuity, the denominator shold be zero.

x2+3x4=0

(x+4)(x1)=0

x=4andx=1

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