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Using properties of determinants, prove: , where is any scalar.
Using properties of determinants, prove:
$\begin{vmatrix} x & x^2 & 1 + px^3 \\ y & y^2 & 1 + py^3 \\ z & z^2 & 1 + pz^3 \end{vmatrix} = (1 + pxyz)(x - y)(y - z)(z - x)$, where $p$ is any scalar.
Given: $\begin{vmatrix} x & x^2 & 1 + px^3 \\ y & y^2 & 1 + py^3 \\ z & z^2 & 1 + pz^3 \end{vmatrix}$, where $p$ is any scalar
To show: $(1 + pxyz)(x - y)(y - z)(z - x)$
Answer
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From ISC 2018 Specimen Mathematics Paper 1, question 3.