3 and 4 .Determinants and Matrices
easy

समीकरण  $\left| {\,\begin{array}{*{20}{c}}1&1&x\\{p + 1}&{p + 1}&{p + x}\\3&{x + 1}&{x + 2}\end{array}\,} \right| = 0$ के हल हैं

A

$x = 1,\,2$

B

$x = 2,\,3$

C

$x = 1,\,p,\,2$

D

$x = 1,\,2,\, - p$

Solution

$A = \left| {\begin{array}{*{20}{c}}1&1&x\\{p + 1}&{p + 1}&{p + x}\\3&{x + 1}&{x + 2}\end{array}\,} \right|$

$|A|\, = 0$ के लिये, $x = 1$ ओर $2$

अत: विकल्प $ (a) $ सही है।

Standard 12
Mathematics

Similar Questions

Start a Free Trial Now

Confusing about what to choose? Our team will schedule a demo shortly.