Posted by **.** on Friday, October 2, 2009 at 4:31pm.

How do i find the domain and range of these functions?

f(x)=x+1

f(x)=2/x

f(x)=(x+1)/(2x-5)

f(x)=sqrt(x+1)

f(x)=sqrt(3x-9)

f(x)=1/sqrt(x-5)

- Math -
**bobpursley**, Friday, October 2, 2009 at 4:39pm
for domain, look at what values of x are allowed. For instance, in the last, x cannot be 5, you cannot have sqrt0 in the denominator.

For range of f(x), put extreme values in for x, see what the f(x) is.

## Answer This Question

## Related Questions

- Math Help please!! - Could someone show me how to solve these problems step by ...
- math-Inverse functions - f(x)=-4x-2 & g(x)=5x-6. Find (f*g) and state domain. f(...
- Math - How do you find a square root of a number that's not a perfect square? I'...
- Math(Roots) - sqrt(24) *I don't really get this stuff.Can somebody please help ...
- Math - f(x)= 4-x^2 and g(x)= sqrt (x) find the implied domain of fg(x) fg(x)= f(...
- Mathematics - sqrt 6 * sqrt 8 also sqrt 7 * sqrt 5 6.92820323 and 5.916079783 So...
- math,algebra,help - Directions are simplify by combining like terms. x radiacal ...
- Algebra - Evaluate sqrt7x (sqrt x-7 sqrt7) Show your work. sqrt(7)*sqrt(x)-sqrt(...
- Calculus - Find the sum and difference functions f + g and f – g for the ...
- Inequality - When I solve the inquality 2x^2 - 6 < 0, I get x < + or - ...

More Related Questions