Let \[f(x)=\left\{ \begin{matrix} \frac{x-4}{\left| x-4 \right|}+a,\,\,\,\,\,\,x4 \\ \end{matrix} \right.\] Then \[f(x)\] is continuous at x=4

Let \[f(x)=\left\{ \begin{matrix} \frac{x-4}{\left| x-4 \right

1.	Let \[f(x)=\left\{ \begin{matrix} \frac{x-4}{\left\| x-4 \right\|}+a,\,\,\,\,\,\,x4 \\ \end{matrix} \right.\] Then \[f(x)\] is continuous at x=4
A.	\[a=0,\text{ }b=0\]
B.	\[a=1,\text{ }b=1\]
C.	\[a=-\,1,\text{ }b=1\]
D.	\[a=1,\text{ }b=-1\]
Answer» E.

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Let \[f(x)=\left\{ \begin{matrix} \frac{x-4}{\left| x-4 \right|}+a,\,\,\,\,\,\,x4 \\ \end{matrix} \right.\] Then \[f(x)\] is continuous at x=4

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