Download App

[ Question Bank ] — MATHS STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceMATHS[ Question Bank ]1 Mark
Question
If matrix $A=\left[\begin{array}{cc}x+y & 3 \\ 4 & y\end{array}\right]=\left[\begin{array}{ll}4 & 3 \\ 4 & 1\end{array}\right]$ then the value of $x$ will be :
✓

Answer

self

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from [ Question Bank ]→[ Question Bank ] — all question types→MATHS STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

If $\tan^{-1}3+\tan^{-1}\text{x}=\tan^{-1}8,$ then x =
  1. $5$
  2. $\frac{1}{5}$
  3. $\frac{5}{14}$
  4. $\frac{14}{5}$
→
If the polynomial equation $\text{a}_0\text{x}^{\text{n}}+\text{a}_{\text{n}-1}\text{x}^{\text{n}-1}+\text{a}_{\text{n}-2}\text{x}^{\text{n}-2}+...\text{a}_2\text{x}^2+\text{a}_1\text{x}+\text{a}_0=0$ n positive integer,has two different real roots $\alpha$ and $\beta,$ then between $\alpha$ and $\beta,$ the equation $\text{n}\text{a}_{\text{n}}\text{x}^{\text{n}-1}+(\text{n}-1)\text{a}_{\text{n}-1}\text{x}^{\text{n}-2}+...+\text{a}_1=0$ has:
  1. Exactly one root.
  2. Almost one root.
  3. At least one root.
  4. No root.
→
$f(x) = x^x$ has a stationary point at:
→
The common region determined by all the constraints of a linear programming problem is called:
→
The value of $\Delta=\left|\begin{array}{ccc}3 & 7 & 13 \\ -5 & 0 & 0 \\ 0 & 11 & -2\end{array}\right|$ is
→
If $\hat{\text{i}},\hat{\text{j}},\hat{\text{k}}$ are unit vectors, then
  1. $\hat{\text{i}}.\hat{\text{j}}=1$
  2. $\hat{\text{i}}.\hat{\text{i}}=1$
  3. $\hat{\text{i}}\times\hat{\text{j}}=1$
  4. $\hat{\text{i}}\times\big(\hat{\text{j}}\times\hat{\text{k}}\big)=1$
→
You are given that A and B are two events such that $P ( B )=\frac{3}{5}, P ( A \mid B )=\frac{1}{2}$ and $P ( A \cup B )=\frac{4}{5}$, then $P ( A )$ equals
→
Using the factor theorem it is found that a + b, b + c and c + a are three factors of the determinant $\begin{vmatrix}-2\text{a}&\text{a}+\text{b}&\text{a}+\text{c}\\\text{b}+\text{a}&-2\text{b}&\text{b}+\text{c}\\\text{c}+\text{a}&\text{c}+\text{b}&-2\text{c}\end{vmatrix}$ the other factor in the value of the determinant is:
  1. 4
  2. 2
  3. a + b + c
  4. None of these.
→
The area of the region bounded by the curve $= 2x - x^2$ and the line $y = x$ is $.....$ square units:
→
If $f(x)=x^3-6 x^2+9 x+3$ be a decreasing function, then $x$ lies in
→