Asked by Yaekob
Find domain and range
a)f(x)= uderthe radical 1-3x
b)f(x)=1/2x-6
a)f(x)= uderthe radical 1-3x
b)f(x)=1/2x-6
Answers
Answered by
Steve
you know that the domain of √u is u>=0.
So, you need
1-3x >= 0
for the other, the domain is all reals except where the denominator is zero. So, where 2x-6=0, that value is excluded.
D = (-∞,3)U(3,∞)
So, you need
1-3x >= 0
for the other, the domain is all reals except where the denominator is zero. So, where 2x-6=0, that value is excluded.
D = (-∞,3)U(3,∞)
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