SOLUTION: State the domain of the following Question 1 a) f(x)=suareroot x+4 b) g(x)= 2x+1/x-3 c) h(x)= 3x^2+5x-3 d) l(x)= 2x+3 m(x)= 3/x^2+7

Question 92246: State the domain of the following
Question 1

a) f(x)=suareroot x+4
b) g(x)= 2x+1/x-3
c) h(x)= 3x^2+5x-3
d) l(x)= 2x+3
m(x)= 3/x^2+7
Found 2 solutions by stanbon, Nate:
Answer by stanbon(48535) (Show Source):
You can put this solution on YOUR website!
State the domain of the following
Question 1
a) f(x)=suareroot(x+4)
All Real numbers >=-4
------------------------
b) g(x)= 2x+1/x-3
All Real numbers except x=3
-----------------------
c) h(x)= 3x^2+5x-3
All real numbers
---------------------
d) l(x)= 2x+3
All Real numbers
----------------------------
m(x)= 3/x^2+7
All real numbers
=========================================
Cheers,
Stan H.

Answer by Nate(3500) (Show Source):
You can put this solution on YOUR website!
a) f(x) = squareroot (x + 4)
You can not take the square root of a number less than zero....

b) g(x)= (2x + 1)/(x - 3)
The denominator can not be zero....

Domain: All Reals Save for 3

c) h(x)= 3x^2 + 5x - 3
There are no limits by the domain of a parabola ... Domain: All Reals

d) l(x)= 2x + 3
There are no limits by the domain of a linear line ... Domain: All Reals

m(x)= 3/(x^2 + 7)
The denominator can not be zero.... x^2 will never be negative ... Domain: All Reals