If begin vmatrix 3 x - 7 -2 - 4 lend vmatrix - begin vmatrix 8 - 7 6 - 4 lend vmatrix - find the value of X-

3x amp;7 nbsp; nbsp; 2 amp; 4 = 8 amp;7 nbsp; nbsp;6 amp; 4 ⇒ 12x+14=32 42 ⇒ 12x+14= 10 ⇒ 12x= 24 ⇒ nbsp;x= 2 ...

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Adjoint of a Matrix

If begin vmat...

Question

If $∣ ∣ ∣ \begin{matrix} 3 x & 7 - 2 & 4 \end{matrix} ∣ ∣ ∣ = ∣ ∣ ∣ \begin{matrix} 8 & 7 6 & 4 \end{matrix} ∣ ∣ ∣$ , find the value of $x$ .

Open in App

Solution

Suggest Corrections

Similar questions

∣ ∣ ∣ \begin{matrix} 3 x & 7 - 2 & 4 \end{matrix} ∣ ∣ ∣ = ∣ ∣ ∣ \begin{matrix} 8 & 7 6 & 4 \end{matrix} ∣ ∣ ∣

x .

If $∣ ∣ ∣ \begin{matrix} 3 x & 7 - 2 & 4 \end{matrix} ∣ ∣ ∣ = ∣ ∣ ∣ \begin{matrix} 8 & 7 6 & 4 \end{matrix} ∣ ∣ ∣$ , find the value of x.

∣ ∣ ∣ \begin{matrix} x & 4 3 & 2 \end{matrix} ∣ ∣ ∣ = ∣ ∣ ∣ \begin{matrix} - 3 & - 5 1 & 3 \end{matrix} ∣ ∣ ∣,

x

(a) - 2 (b) 8 (c) - 4 (d) 4

Expand the values of x, if

(i) $∣ ∣ ∣ \begin{matrix} 2 & 4 5 & 1 \end{matrix} ∣ ∣ ∣ = ∣ ∣ ∣ \begin{matrix} 2 x & 4 6 & x \end{matrix} ∣ ∣ ∣$

(ii) $∣ ∣ ∣ \begin{matrix} 2 & 3 4 & 5 \end{matrix} ∣ ∣ ∣ = ∣ ∣ ∣ \begin{matrix} x & 3 2 x & 5 \end{matrix} ∣ ∣ ∣$

If $∣ ∣ ∣ \begin{matrix} 2 x & 5 8 & x \end{matrix} ∣ ∣ ∣ = ∣ ∣ ∣ \begin{matrix} 6 & - 2 7 & 3 \end{matrix} ∣ ∣ ∣$ , then the value of x is

(a) $3$
(b) $\pm 3$
(c) $\pm 6$
(d) $6$

Join BYJU'S Learning Program