For which Domain, the functions `f(x) = 2x^2-1` and `g(x)=1-3x` are eq – InterviewSolution

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1.	For which Domain, the functions `f(x) = 2x^2-1` and `g(x)=1-3x` are equal toA. `[2,-1//2]`B. `[-2,1//2]`C. `[1,2]`D. `[-2,-1//2]`
Answer» Correct Answer - B We have f(x)=g(x) `Rightarrow 2x^(2)-1=1-3x` `Rightarrow 2x^(2)+3x-2=0 Rightarrow (2x-1)(x+2)=0 Rightarrow x=-2,1//2` Hence, `f(x)=g(x)"for all "x in {-2,1//2}`

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