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Find the values of `x` for which the functions `f(x)=3x^2-1` and `g(x)=3+x` are equalA. `[-1,(4)/(3)]`B. `[1,(4)/(3)]`C. `[-1,-(4)/(3)]`D. `[-2,-(4)/(3)]` |
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Answer» Correct Answer - A We have `f(x)=3x^(2)-1 and g(x) =3+x` f(x) =g(x) `rArr 3x^(2)-1=3+x` `rArr 3x^(2)-x-4=0` `rArr 3x^(2)-4x+3x-4=0` `rArr x(3x-4)+1(3x-4)=0` `rArr (3x -4)(x+1)=0` `:. x=-1,(4)/(3)` So domain for which f(x) and g(x) are equal to `[-1,(4)/(3)]` |
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