Hi everyone im COmpletly oblivious when it comes to calculus and im going to try and learn it myself. i took a calculus course in college and got a C, i remember some things but i pretty much cheated. That was a couple of years ago, and well now i want to learn it . Anyways here is my problem(adsbygoogle = window.adsbygoogle || []).push({});

This is an example, not my own work

lim (x^2 - 4) / (5x - 10)

x->2

when i sub 2 into x i get 0/0, so im asked to make a chart im given

x **********(x^2 - 4) / (5x - 10) right side limit

3 ****1.0

2.5 ****** 0.9

2.1 ****** 0.82

2.01 ******* 0.802

2.001 ********* 0.8002

x ********(x^2 - 4) / (5x - 10) left side limit

1 ******* 0.6

1.5 ******* 0.7

1.9 ****** 0.78

1.99 ***** 0.798

1.999 ****** 0.7998

what i dont understand is how the book got these numbers, like on the right side 3 appears to equal 1 and on the left side 1 appears to equal (.6). Im saying appears to equal because i didnt see a equal sign. what i think i understand is that on the left side its showing x getting closer to a. But i dont know :surprised

I hope this is enough information on my part to count, i would really appreciate someone to help me understand

thank you in advance

PS- the astriks are there to make space between the numbers

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# Problem with a chart

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