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anastassius [24]
3 years ago
15

5x+21+178/(x-7) How do I solve for domain and range on this equation?

Mathematics
1 answer:
Luda [366]3 years ago
3 0
The domain is easiest. You simply need to find the fractions, and exclude any X that makes the denominator zero. So in this case, your domain is everything except X=7.

For range, you are trying to find out what are the possible answers. Usually the best way to do this is to try x=infinity, and x=negative infinity, which here gives you answers of infinity and negative infinity. Since the function is almost continuous, I think your range is any real number.
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