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.

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