2006-10-24 21:06:25 · 4 answers · asked by Anonymous in Education & Reference ➔ Higher Education (University +)
domain is what your input values can be and range is what your ouput values can be, x is usually the input and y is the output value so..........if you have 2/x=y, then your domain (x) would be all real numbers except for zero because you cant have 0 in the denominator, the range is all real numbers except 0 because by putting any real number into the input (except for 0) you can get any number except for zero
hope this helps but if it doesnt let me know and ill try again
2006-10-24 21:14:22 · answer #1 · answered by butterstma 3 · 0⤊ 0⤋
Does this seem clearer to you?
domain = possible input
range = possible output
If you have f(x) => y then the range is any value of x that can be put in. For instance, if f(x) = 1/((x - 2)(x - 3)) then the domain is anything but 2 and 3, because those are not legal values.
If f(x) = y0 for some x then y0 is in the range. In the above example you can find the range by finding all values. Clearly 0 is not in the range, since there is no x with f(x) = 0.
By the way, don't let these examples fool you. Domain and range are general - for instance, the hemisphere sqrt(r^2 - x^2 - y^2) = z has as the domain the circle radius r and the range z = [0, r]
2006-10-24 21:25:50 · answer #2 · answered by sofarsogood 5 · 0⤊ 0⤋
Apologies in advance if you're not talking about math, but below is a link from Dr. Math who seems to be better able to decribe them than me.
2006-10-24 21:10:23 · answer #3 · answered by sandra_panda 6 · 0⤊ 0⤋
ok you dont need examples just think
Domain is X
Range is Y
2006-10-24 21:14:30 · answer #4 · answered by amy 2 · 0⤊ 0⤋