How do you evaluate #b-absa# when a=5, b=6?

Answer 1

1
This requires substitution and knowledge of absolute values.

The absolute value of a number is the number without the sign out front. In other words all positive numbers stay positive, and all negative numbers become positive. Knowing this, all we have to do is plug in and subtract: #b-|a|=6-|5|=6-5=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.

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