Let Delta = begin{vmatrix} Ax & x^2 & 1 By | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Given $ \Delta = \begin{vmatrix} Ax & x^2 & 1 \ By & y^2 & 1 \ Cz & z^2 & 1 \end{vmatrix} $. Taking $ x, y, z $ common from $ R_1, R_2, R_3 $ re

Vedclass · Accepted Answer

$ \Delta_1 = \Delta $

Vedclass · Answer

(B) Given $ \Delta = \begin{vmatrix} Ax & x^2 & 1 \ By & y^2 & 1 \ Cz & z^2 & 1 \end{vmatrix} $. Taking $ x, y, z $ common from $ R_1, R_2, R_3 $ respectively: $ \Delta = xyz \begin{vmatrix} A & x & \frac{1}{x} \ B & y & \frac{1}{y} \ C & z & \frac{1}{z} \end{vmatrix} $. Multiply $ C_3 $ by $ xyz $: $ \Delta = \begin{vmatrix} A & x & yz \ B & y & zx \ C & z & xy \end{vmatrix} $. Taking the transpose of the determinant (rows become columns): $ \Delta = \begin{vmatrix} A & B & C \ x & y & z \ yz & zx & xy \end{vmatrix} = \Delta_1 $. Thus,$ \Delta_1 = \Delta $.

Let $ \Delta = \begin{vmatrix} Ax & x^2 & 1 \\ By & y^2 & 1 \\ Cz & z^2 & 1 \end{vmatrix} $ and $ \Delta_1 = \begin{vmatrix} A & B & C \\ x & y & z \\ zy & zx & xy \end{vmatrix} $,then:

Similar Questions

If $\left| \begin{matrix} 1 & 1 & 1 \\ a & b & c \\ a^2 & b^2 & c^2 \end{matrix} \right| = 5$,then $\left| \begin{matrix} bc^2 - b^2c & a^2c - ac^2 & ab^2 - ba^2 \\ b^2 - c^2 & c^2 - a^2 & a^2 - b^2 \\ c - b & a - c & b - a \end{matrix} \right|$ is equal to

Using properties of determinants,prove that:
$\left|\begin{array}{ccc}1 & 1+p & 1+p+q \\ 2 & 3+2 p & 4+3 p+2 q \\ 3 & 6+3 p & 10+6 p+3 q\end{array}\right|=1$

For non-zero,real $a, b$ and $c$,if $\left| \begin{array}{ccc} \frac{a^2+b^2}{c} & c & c \\ a & \frac{b^2+c^2}{a} & a \\ b & b & \frac{c^2+a^2}{b} \end{array} \right| = \alpha abc$,then the value of $\alpha$ is

If $a, b$ and $c$ are non-zero numbers,then $\Delta = \left| \begin{array}{ccc} b^2c^2 & bc & b+c \\ c^2a^2 & ca & c+a \\ a^2b^2 & ab & a+b \end{array} \right|$ is equal to

The determinant of a skew-symmetric matrix of order $3$ is always:

Vedclass Test Series

Exam Paper Generator

Online Exam Module