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Determine the domain of each function R(x) = -√2x


User Brian Bolton
by
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1 Answer

17 votes
17 votes

Answer:

The function is given by,

f(x)=

x

2

+x−2

2x−3

The function is represented as, f(x)=

q(x)

p(x)

where, p(x)=2x−3 and q(x)=x

2

+x−2

Domain of the function is given as,

dom[f(x)]=R−{x:q(x)=0}

Put q(x)=0

∴x

2

+x−2=0

∴x

2

+2x−x−2=0

∴x(x+2)−1(x+2)=0

∴(x+2)(x−1)=0

∴x+2=0 or x−1=0

∴x=−2 or x=1

Thus, domain of the function is,

dom[f(x)]=R−{−2,1}

User Denee
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2.7k points