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functions: find domain and range of f(x) = x^2 - 49
- Thread starter gierhame
- Start date
Re: functions
I'm a bit confused... you mention an "equation" but I don't see one here.
Do you mean
f(x) = x[sup:2c6u8cwo]2[/sup:2c6u8cwo] - 49
Or do you mean something else.
The domain of a function consists of all values for the independent variable (x, in this case) for which the function definition is meaningful.
If
f(x) = x[sup:2c6u8cwo]2[/sup:2c6u8cwo] - 49
f(x) is defined for ANY real number value of x. No matter what real number you pick for x, x[sup:2c6u8cwo]2[/sup:2c6u8cwo] - 49 has a real number value.
gierhame said:I know that i it has something to do with the number 7;
could you explain the process maybe with another problem. I just don't know how to find it with an equation.
I'm a bit confused... you mention an "equation" but I don't see one here.
Do you mean
f(x) = x[sup:2c6u8cwo]2[/sup:2c6u8cwo] - 49
Or do you mean something else.
The domain of a function consists of all values for the independent variable (x, in this case) for which the function definition is meaningful.
If
f(x) = x[sup:2c6u8cwo]2[/sup:2c6u8cwo] - 49
f(x) is defined for ANY real number value of x. No matter what real number you pick for x, x[sup:2c6u8cwo]2[/sup:2c6u8cwo] - 49 has a real number value.
D
Deleted member 4993
Guest
Re: functions
for a quick review with worked out examples - go to:
http://www.purplemath.com/modules/fcns2.htm
gierhame said:How do you find the domain and range of the function of x[sup:2dj28g1d]2[/sup:2dj28g1d]-49?
I don't really understand how to do this.
for a quick review with worked out examples - go to:
http://www.purplemath.com/modules/fcns2.htm