Domains: 4845

Specify function domains:
a / y = 2x-1
b / y = 5x / (2x + 1)
c / y = x2 / (x2-9)

Correct answer:

a = R
b = R-{-1/2}
c = R-{-3,3}

Step-by-step explanation:

2x+1=0  2 x+1=0  2x=1  x=21=0.5  x=21=0.5  b=R1/2
c29=0  c29=0 c1,2=±9=±3 c1=3 c2=3  c=R3,3

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