Find the domain of f(x)=sqrt(5-3x)?

2 ⤊

Find the domain of f(x)=sqrt(5-3x)?

2006-11-05 12:51:26 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

3 answers

5-3x>=0
5/3 >=x
s

2006-11-05 12:53:29 · answer #1 · answered by Anonymous · 0⤊ 3⤋

You can only take the square root of non-negative numbers. Therefore, you must set whatever is under the square root sign greater than or equal to zero.
5 - 3x >= 0
Add 3x to both sides
5 >= 3x
Divide both sides by 3
5/3 >= x
Domain = All real numbers less than or equal to 5/3
Interval notation: (-infinity, 5/3)

2006-11-07 19:25:45 · answer #2 · answered by MsMath 7 · 2⤊ 2⤋

x is any number greater than or equal to 5/3 and possible values of x are the domain

2006-11-05 20:56:21 · answer #3 · answered by MollyMAM 6 · 0⤊ 1⤋