State the domain of the rational function
a.All real numbers except 13.
b.All real numbers except -13 and 13.
c.All real numbers except -2 and 2.
d. All real numbers except 2.

Question

State the domain of the rational function
a.All real numbers except 13. 
b.All real numbers except -13 and 13. 
c.All real numbers except -2 and 2. 
d. All real numbers except 2.

anonymous · Answer

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anonymous · Answer

It will be all real numbers except those that cause the denominator to equal 0, because then it would be undefined.

so set it equal to 0 and solve

2-x=0
2=x

all real numbers except 2