TheBigBadBen
- 79
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I was trying to type a piecewise function, and then this happened:
$$
f(x)=\left{ \begin{array}{ccc}
1 & x \in \mathbb{Q} \\
0 & x \notin \mathbb{Q}
\end{array} \right
$$
What's going on, and how do I fix it?
$$
f(x)=\left{ \begin{array}{ccc}
1 & x \in \mathbb{Q} \\
0 & x \notin \mathbb{Q}
\end{array} \right
$$
What's going on, and how do I fix it?