Need help on this math question

Mathematics

2 answers:

olya-2409 [2.1K]4 years ago

6 0

The domain is all real numbers except 3.

This is an example of a rational function, and it is defined for all real numbers except those that make the denominator equal to 0. (Division by zero is undefined.)

The denominator is x - 3, so you want to AVOID x - 3 = 0 which means avoid x = 3.

irina [24]4 years ago

5 0

$f(x)=\dfrac{7x}{x-3}\\\\The\ domain:\\x-3\neq0\ \ \ \ |+3\\\\x\neq3$

Answer: All real numbers except 3

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