Question 2: Write each of the following sets in tabular forms:
\((ii) \; \) \(\{x\mid x\in R\land 2x+1=0\} \)
Solution:
\[
\begin{align*}
2x+1&=0\\
2x&=-1\\
x&=-\frac{1}{2}
\end{align*}
\]
Tabular Form:
\(\{-\frac{1}{2}\}\)
Explanation:
The condition says: “\(x\) is a real number such that \(2x+1=0\)”
Solving the equation gives only one value: \(x = -\frac{1}{2}\)
So, this set contains just a single real number: i.e. \(\{-\frac{1}{2}\}\)