If A= [ cc 2 & 3 1 & -4 ], then find A ^ -1 . - Vidyadip

Question

If $A=\left[\begin{array}{cc}2 & 3 \\ 1 & -4\end{array}\right]$, then find $A ^{-1}$.

✓

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 "2 Marks Questions" from [ Question Bank ]→[ Question Bank ] — all question types→Maths STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Three shopkeepers A, B and C go to a store to buy stationary. A purchases 12 dozen notebooks, 5 dozen pens and 6 dozen pencils. B purchases 10 dozen notebooks, 6 dozen pens and 7 dozen pencils. Cpurchases 11 dozen notebooks, 13 dozen pens and 8 dozen pencils. A notebook costs 40 paise, a pen costs Rs. 1.25 and a pencil costs 35 paise. Use matrix multiplication to calculate each individual's bill.

If $A$ is a square matrix such that $A^2=A$, then write the value of $7 A-(I+A)^3$, where $I$ is the identity matrix.

If A is a singular matrix, then write the value of |A|.

What is the cosine of the angle with the vector $\sqrt2\hat{\text{i}}+\hat{\text{j}}+\hat{\text{k}}$ makes with y-axis?

The probability distribution function oif a random variable X is given by

$X_i$	0	1	2
$P_i$	$3c^3$	$4c - 10c^2$	5c - 1

Where c > 0
Find: c.

Integrate the function in exercise.
$\text{x} \ \sin3\text{x}$

Define an equivalence relation.

Evaluate the product $\big(3\vec{a}-5\vec{b})\cdot\big(2\vec{a}+7\vec{b}).$

If the vectors $3\hat{\text{i}}+\text{m}\hat{\text{j}}+\hat{\text{k}}$ and $2\hat{\text{i}}-\hat{\text{j}}-8\hat{\text{k}}$ are orthonal, find m.

Find the unit vector in the direction of $3\hat{\text{i}}+4\hat{\text{j}}-12\hat{\text{k}}$.