3 years ago

Find two different 2 by 2 matrices a and b such that ab=ba

Mathematics

1 answer:

stiv31 [10]3 years ago

8 0

Let $\mathbf A=\mathbf I$ be the identity matrix. Then pick whatever matrix you like for $\mathbf B$ .

You might be interested in

Bob has a set of 10 colored markers in a backpack. One is yellow and one is blue. What is the probability Bob will reach into th

11111nata11111 [884]

4/8 because if 2 already got pulled theres only 8 left four blue four yellow theres a 4 out od 8 chance youll pull them like that again

3 0

3 years ago

Read 2 more answers

A right triangle has a side with length 12 in and a hypotenuse with length 20 in. find the length of the missing leg. (round to

OLEGan [10]

Let the unknown side be "z" inches
Through pythagoras:
${12}^{2} + {z}^{2} = {20}^{2}$
Because the square of the two sides add up to the square of the hypotenuse in a right triangle.

This means that
${z }^{2} = {20}^{2} - {12}^{2}$
${z}^{2} = 400 - 144 = 256$
$z = \sqrt{256} = 16$
So the missing side is 16 inches

Hope this helped

6 0

4 years ago

A bag contains 5 red marbles , 2 blue marbles, 4 white marbles, and 1 yellow marble. if 2 marbles are chosen in a row , without

slega [8]

P of 1st white marble = 4/ 12

and P of 2nd white in a row = 3 /11

total = ( 4/12) * ( 3/11)
= 1/11

hope it helped

8 0

4 years ago

If F(x) = log 5 2x, find F^-1(x). a. 5^y=2x b. 5^2y=x c. y = (5^x)/2

gregori [183]

Answer:

y = $\frac{5^{x} }{2}$