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Question

Assume that exists limx1f(x) and x2+x2x+3f(x)x2x2+2x1x+3 holds for certain interval containing that point x=1, then limx1f(x)

A
is equal to f(1)
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B
is equal to 1
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C
is non-existent
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D
is equal to 1
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Solution

The correct options are
A is equal to f(1)
D is equal to 1
limx1x2+x2x+3=1=limx1x2+2x1x+3
limx1f(x)x2=limx1f(x)=1
Which is also equal tof(1)
Hence, options 'A' and 'D' are correct.

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