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Answer:
<em>The domain of f is (-∞,4)</em>
Step-by-step explanation:
<u>Domain of a Function</u>
The domain of a function f is the set of all the values that the input variable can take so the function exists.
We are given the function
It's a rational function which denominator cannot be 0. In the denominator, there is a square root whose radicand cannot be negative, that is, 4-x must be positive or zero, but the previous restriction takes out 0 from the domain, thus:
4 - x > 0
Subtracting 4:
- x > -4
Multiplying by -1 and swapping the inequality sign:
x < 4
Thus the domain of f is (-∞,4)
Answer:
Step-by-step explanation:
88 can be rewritten as 8 x 10 and 8 can be rewritten as making a 2 come out of the root.
10 can be rewritten as 2 x 5.
2*2 can also be rewritten as making a 2 come out of the root.
We can't keep simplifying the root.