Question:medium
Let
\[
f(x)=
\begin{vmatrix}
-1 & x & 3 \\
0 & 1 & 2x \\
1 & -1 & 1
\end{vmatrix}.
\]
Then the value of \(f(-1)\) is equal to:
Let
\[
f(x)=
\begin{vmatrix}
-1 & x & 3 \\
0 & 1 & 2x \\
1 & -1 & 1
\end{vmatrix}.
\]
Then the value of \(f(-1)\) is equal to:
Show Hint
Always look for zeros in a column or row to expand the determinant. Expanding along the first column here was the fastest choice due to the zero in the middle.
Updated On: Jun 25, 2026
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The Correct Option is
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