Question 1 Report
The determinant of matrix \(\begin{pmatrix} x & 1 & 0 \\ 1-x & 2 & 3 \\ 1 & 1+x & 4 \end{pmatrix}\) in terms of x is
Answer Details
∣∣ ∣∣x101−x2311+x4∣∣ ∣∣ | x 1 0 1 − x 2 3 1 1 + x 4 | = x∣∣∣231+x4∣∣∣ | 2 3 1 + x 4 | - ∣∣∣1−x314∣∣∣ | 1 − x 3 1 4 | = 0 = x[8 - 3(1 + x)] - [4(1 - x)-3] - 0 = x[5 - 3x] - [1 - 4x] = 5x - 3x2 -1 + 4x = -3x2 + 9X - 1
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