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What are the important parts of the equation to graph #f(x) = (x^2 - 1) / (x+1)#?

Answer 1

#xcancel=-1#

This equation can be simplified to #((x+1)(x-1))/(x+1) rarr (cancel(x+1)(x-1))/(cancel(x+1)) rarr x-1#

However we must remember the restriction #xcancel=-1# As doing so would make #0/0# in the original equation. However every other point would be acceptable.

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Answer 2

Ethan Adkins

The important parts of the equation to graph f(x) = (x^2 - 1) / (x+1) are the numerator (x^2 - 1) and the denominator (x+1).

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.