limits

JEE Advanced 2015 Coaching › Calculus questions › limits

lim_xâ†’4f(x)-5/x-2=1

wat is f(x)

#Mathematics #Calculus

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7 Answers

11

Subash ·2009-01-02 10:02:31

maybe x+3

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3

msp ·2009-01-02 10:14:53

i didnt know the answerfor the question. Can u have the prooof.

i have managed to get the same answer by equating the numerator and denominator.I want to check its correctness.

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11

Subash ·2009-01-02 10:25:27

aplying limits separately for numerator and denominator

we get Lt(x-4)f(X)=7

i just guessed it may be any funtion satisfying this value

so gave f(x)=x+3

not sure abt the mthd

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33

Abhishek Priyam ·2009-01-02 10:43:59

Denominator is not tending to zero so numerator must not be zero and should be finite.. therefore

Lt f(x)=7
xâ†’4

So any function satisfying this can be f(x)
Better see options and carefully as it may be multiple correct..

examples of f(x)=x+3
or
f(x)=7
or
f(x)=sin(xÎ /8)+6
or
..
or
..
or
..

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33

Abhishek Priyam ·2009-01-02 10:46:09

thats why Shubash wrote "may be.."

again cheers:)

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11

Subash ·2009-01-02 10:56:39

cheers mate

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33

Abhishek Priyam ·2009-01-02 22:14:11

here mission cheers to make everyone cheerful..

ChEeRs

[4]

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Your Answer

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