Question
If $A =\left[\begin{array}{l}2 \\ 5\end{array}\right], B =[7,8]$, then the value of $BA$ is $........$
✓
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.
Explore more
Similar questions
If E and F are independent events then $P ( E \cap F )=$ ___________ .
→Fill in the blanks:
If x, y, z ∈ R, then the value of determinant $\begin{vmatrix}(2^\text{x}+2^{-\text{x}})^2&(2^\text{x}-2^{-\text{x}})^2&1\$3^\text{x}+3^{-\text{x}})^2&(3^\text{x}-3^{-\text{x}})^2&1\$4^\text{x}+4^{-\text{x}})&(4^\text{x}-4^{-\text{x}})^2&1\end{vmatrix}$ is:
→If x, y, z ∈ R, then the value of determinant $\begin{vmatrix}(2^\text{x}+2^{-\text{x}})^2&(2^\text{x}-2^{-\text{x}})^2&1\$3^\text{x}+3^{-\text{x}})^2&(3^\text{x}-3^{-\text{x}})^2&1\$4^\text{x}+4^{-\text{x}})&(4^\text{x}-4^{-\text{x}})^2&1\end{vmatrix}$ is:
Fill in the blank.
If A and B are symmetric matrices, then:
If A and B are symmetric matrices, then:
- AB – BA is a _________.
- BA – 2AB is a _________.
If A and B are two $3 \times 3$ order square matrix such that $| A |=-1,|B|=3$, then $|3 AB |=$_________
→A mirror in the shape of an ellipse represented by $\frac{\text{x}^2}{9}+-\frac{\text{y}^2}{4}=1$ was hanging on the wall. Arun and his sister were playing with ball inside the house, even their mother refused to do so. All of sudden, ball hit the mirror and got a scratch in the shape of line represented by $\frac{\text{x}}{3}+\frac{\text{y}}{2}=1$ 
Based on the above information, answer the following questions.
→ Based on the above information, answer the following questions.
- Point(s) of intersection of ellipse and scratch (straight line) is (are).
- (0, 2), (3, 0)
- (2, 0), (3, 0)
- (2, 3), (0, 0)
- (0, 3), (3, 0)
- Area of smaller region bounded by the ellipse and line is represented by.
- The value of $\frac{2}{3}\int\limits_{0}^{3}\sqrt{9-\text{x}^2}\text{dx}$ is.
- $\frac{\pi}{2}$
- $\pi$
- $\frac{3\pi}{2}$
- $\frac{\pi}{4}$
- The value of $2\int\limits_{0}^{3}\bigg(1-\frac{\text{x}}{3}\bigg)\text{dx}$ is.
- 0
- 1
- 2
- 3
- Area of the smaller region bounded by the mirror and scratch is.
- $3\Big(\frac{\pi}{2}+1\Big)\text{ sq.units}$
- $\Big(\frac{\pi}{2}+1\Big)\text{ sq.units}$
- $\Big(\frac{\pi}{2}-1\Big)\text{ sq.units}$
- $3\Big(\frac{\pi}{2}-1\Big)\text{ sq.units}$
Fill in the blank.
If A is symmetric matrix, then B′AB is _________.
If A is symmetric matrix, then B′AB is _________.
The greatest integer function defined by f(x) = [x], 0 < x < 2 is not differentiable at x = _________.
Fill in the blank.
Let f : R → R be defined by $\text{f}(\text{x})=\frac{\text{x}}{\sqrt{1+\text{x}^2}}.$ Then (fofof)(x) = _______.
→Let f : R → R be defined by $\text{f}(\text{x})=\frac{\text{x}}{\sqrt{1+\text{x}^2}}.$ Then (fofof)(x) = _______.
If $y=\sqrt{x^3}$ then the value of $\frac{d y}{d x}$ will be……..
→Fill in the blank.
If $A$ is a symmetric matrix, then $A^3$ is a _________ matrix.
→If $A$ is a symmetric matrix, then $A^3$ is a _________ matrix.