2007-03-08 13:34:27 · 5 answers · asked by jimmayne t 1 in Science & Mathematics ➔ Mathematics
The domain of a function is the set of x values which you can plug in. Some functions have limited domains, meaning that you can't put in any value of x. For example, you can't take negative square roots so any function like sqrt(x) has a limited domain. Other functions, like y=x^2, have no restrictions on domain because x can equal anything.
The range is the set of y values which can come OUT of the function. These are more variable than the domain and depend on the function. Any linear, cubic, etc. function has an infinite range. However, any quadratic, quartic, etc. function has a restricted rang.e
2007-03-08 13:38:09 · answer #1 · answered by Aegor R 4 · 1⤊ 0⤋
X is what gets put into the equation, and Y is what comes out.
For example:
Y = 2X + 3
X is the independent variable, or the "domain" (the horizontal axis when graphing). You can substitute various numbers for X.
Y is the dependent variable, named such because what Y comes out to be depends on what you put in for X. (Y is the vertical axis when graphing.)
2007-03-08 13:40:32 · answer #2 · answered by SheIsDeath 2 · 0⤊ 0⤋
Domain deals with the x-axis and range deals with the y-axis
2007-03-08 13:37:08 · answer #3 · answered by llllarry1 5 · 1⤊ 0⤋
the domain is the vaule of x where the equation is real, range is just the same thing, but with y.
2007-03-08 13:38:52 · answer #4 · answered by seychellie 3 · 0⤊ 0⤋
Domain is value of x in an equation, while y is the resulting y value after subst in for x.
2007-03-08 13:37:17 · answer #5 · answered by richardwptljc 6 · 1⤊ 0⤋