If \[f(x)=\left\{ \begin{matrix} {{x}^{2}}-ax+3,\,\,\,x\,\,\text{is}\,\,\text{rational} \\ 2-x,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x\,\,\text{is}\,\,\text{irrational} \\ \end{matrix} \right.\]is continuous at exactly two points, then the possible values of a are

\[(-\infty ,-3)\cup (3,\infty )\]

If \[f(x)=\left\{ \begin{matrix} {{x}^{2}}-ax+3,\,\,\,x\,\,\text{

1.	If \[f(x)=\left\{ \begin{matrix} {{x}^{2}}-ax+3,\,\,\,x\,\,\text{is}\,\,\text{rational} \\ 2-x,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x\,\,\text{is}\,\,\text{irrational} \\ \end{matrix} \right.\]is continuous at exactly two points, then the possible values of a are
A.	\[(2,\infty )\]
B.	\[(-\infty ,3)\]
C.	\[(-\infty ,-3)\cup (3,\infty )\]
D.	none of these
Answer» D. none of these

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If \[f(x)=\left\{ \begin{matrix} {{x}^{2}}-ax+3,\,\,\,x\,\,\text{is}\,\,\text{rational} \\ 2-x,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x\,\,\text{is}\,\,\text{irrational} \\ \end{matrix} \right.\]is continuous at exactly two points, then the possible values of a are

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