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Daisy R.

asked • 04/24/14

complete the table and use it to evalutate the limit

limx+1/x^2-x-2
x-->2
 
 
                      table 
x   1.9   1.99  1.999  2  2.001  2.01  2.1 
f(x)
  
 
what is missing is the values of f(x)
 

1 Expert Answer

By:

Daisy R.

so to complete the table all you have to do is subtitude for the values of x?
If i have another problem just like this do i have always simplify just like you did with (x^2-x-2).
i have lim    (3-2x) all i have to do is subtitude for the values of x given from the table?
            x -->3
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04/25/14

Daisy R.

when you cancel x+1 i did you leave a 1 if you have
lim         x+1/(x+1)(x-2)
   x -->2
                         so i thought that the answer should be lim =x-2                                                  
                                                                                   x -->2
                                                                                       why is this wrong?
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04/25/14

Jim S.

tutor
Daisy,
        Dividing anything by zero is not defined, as you can see from the table f(x) gets smaller and smaller the closer x gets to 2 when it is approached from the right. f(x) gets larger and larger when approached from the left. So you can see that f(x) does not have a specific value as x approaches 2
        Your other question, about making a table is yes you just substitute for each x.
 
        For example if f(x) =3-2x the table would be
x=    1    2   3   4    5
f(x)= 1  -1  -3  -5   -7
 
Let me know if this answers your questions
Jim
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04/25/14

Daisy R.

so thats all i have to do to evalutete the limit?
 
 
 
than youu so much 
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04/25/14

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