Question

If \( \left[ 1 \quad x \quad 1 \right] \) is equal to \( \left[ 1 \quad 3 \quad 2 \right] \), then \( x \) is:

• A. \( -\frac{1}{2} \)
• B. 1
• C. \( \frac{1}{2} \)
• D. 1

Hint:

For equations involving matrices or vectors, match corresponding components to solve for the unknown.

Answer 1

The Correct Option is C

Step 1: Set the values in the equation \( [1, x, 1] = [1, 3, 2] \).
Step 2: Solve for \( x \) and find that \( x = \frac{1}{2} \).

Final Answer: \[ \boxed{\frac{1}{2}} \]