(20points) Let A be a 4 x 4 matrix and let A be a eigenvalue of multiplicity 3. If A - AI has rank 1, is A defective? Explain.

Answers

Answer 1

No, A is not defective.

What is the rank nullity theorem?    

The rank–nullity theorem is a theorem in linear algebra, which asserts that the dimension of the domain of a linear map is the sum of its rank (the dimension of its image) and its nullity (the dimension of its kernel).

Given here  A be a 4 x 4 matrix and let λ be an eigenvalue of multiplicity 3 and rank 1, then by rank nullity theorem we have

    Rank(A-λI) + Nullity((A-λI) =4

⇒dimN(N-λI) = Nullity(A-λI)

⇒dimN(N-λI) = 4 - Rank(A-λI)

⇒dimN(N-λI)  = 4-1

⇒dimN(N-λI) = 3

Therefore 3 linearly independent eigenvectors belong to eigenvalue λ. Since λ is an eigenvalue of multiplicity 3, this ensures that there is a different eigenvalue different from λ. Along with 3 linearly independent eigenvectors in the eigenspace of λ, this gives us 4 linearly independent eigenvectors in the matrix A. Now we An n × n matrix A is diagonalizable if and only if A has n linearly independent eigenvectors. Thus A is nondefective

Hence, matrix A is not defective.

Learn more about the rank nullity theorem here:

https://brainly.com/question/30023972

#SPJ1

   


Related Questions

(-4x + 5) - (6x + 7) = 0
What is the solution to the equation?
O x = 6
O x= 1
O x = -0.2
O = -1.2

Answers

The answer of this math question is C) X= -0.2

Solve this and put it an inequality.
|x - 7|=x-7

Answers

Answer:

x>=7

Step-by-step explanation:

Since the equation on the right is equal to the equation on the left that means that x has to be greater or equal to 7 to make the statement true.

Find the area of the figure

Answers

Answer:

145.1327

Step-by-step explanation:

Divide the given figure up into two smaller figures. Calculate the area of each of the smaller figures and then add up the areas. One can divide this figure into a rectangle with sides (8 and 15), and a semi-circle with a diameter of (8m).

Calculate the area of the rectangle, the formula to calculate the area of a rectangle is ([tex]base*height[/tex])

8 * 15 = 120

Calculate the area of the semi-circle. The formulas for the area of a semi-circle is the formula for the area of a circle divided by (2), ([tex]A=\frac{(pi)r^2}{2}[/tex]). Where (A) represents the are, (pi) represents the number (3.1415...), and (r) represents the radius of the circle. The radius is always half of the diameter of a cricle. Substitute in the given values, and solve

[tex]\frac{(pi)(\frac{8}{2})^2}{2}[/tex]

[tex]=\frac{(pi)(4)^2}{2}[/tex]

[tex]=\frac{(pi)16}{2}[/tex]

[tex]=8(pi)[/tex]

~25.1327

Now add up the two values,

120 + 25.1327

= 145.1327

Answer it right and i'll try to give you brainliest.

Answers

Answer:

384 cm²

Step-by-step explanation:

Since it is a square pyramid, the total surface area of the pyramid is the area of its square base plus the area of its 4 triangular faces.

[tex]\boxed{area \: of \: triangle = \frac{1}{2} \times base \times height }[/tex]

Area of a triangular face

= ½ ×12 ×10

= 60 cm²

[tex]\boxed{area \: of \: square = side \times side}[/tex]

Base area of pyramid

= 12 ×12

= 144 cm²

∴ Surface area of pyramid

= 4(60) +144

= 240 +144

= 384 cm²

perimeter 254 meters and dimension measures 6 meters​

Answers

Answer:

didn't even ask a question

Step-by-step explanation:

impossible to answer without a question

Write the equation for the line that passes through the points (3, 18) and (-3,0)

Answers

y= 3x + 9 hope this helpsssssssss

What is the area of this parallelogram?


104 m²

88 m²

56 m²

32 m²

Answers

Answer: To find area of a rectangle, multiply its base (length) by its height (width). Plug in the base, 7 meters, and the height, 8 meters. So the area of Rectangle DFBE is 56 square meters.

88m

HOPE THIS HELPS

Find the volume of the cylinder. Round your answer to the nearest tenth.
3ft.
10 ft.
Enter only the numerical value with the units of measure.

Answers

V=pi(radius)^2*height so the answer is 282.7 feet cubed

hi can anyone help me with this please

Answers

Answer:35in.

Step-by-step explanation:

I reccomend splitting it into sections when given problems like this.

The smaller two rectangles would be 5in * 2in which is 10in then just add them together.

For the bigger one, you'd do 5-2 in order to get the missing inches which will be 3+2 once added 5in*3in is 15in.

Finally, add 15+10+10 (15=The middle rectangle and 10=the sides)

Answer:

Break it up into pieces. The answer is 35in^2

Step-by-step explanation:

I took the first rectangle you see which is 5in by 2. Multiply that and you get 10

I then took the second one and is the 5 in by 3in. Multiply those and you get 15

The last one is the exact same as the first one

Add the areas all together and you get the area of the whole shape

Hope that helps

Which is bigger 3/12 or -4/5

Answers

Step-by-step explanation:

3/12 = 0.25

-4/5 = - 0.8

so since the 2nd one is negative.

so 3/12 is the bigger

3/12 cause the other is negative

What is the value of the smaller zero of the function f(x) = 2x2 - 8x - 24?

Answers

2x^2 - 8x - 24
X^2 - 4x - 12
(X - 6) (x + 2) = 0
X= 6 X= -2
Smaller zero: X =2

expand expression (3x-7)(2x+7), without using long multiplication find 53×47

Answers

Answer:

6x² + 7x - 49

53×47 = 2491

Step-by-step explanation:

(3x-7)(2x+7)

6x² + 21x - 14x - 49

combine like terms:

6x² + 7x - 49

Find the area of the polygon to the nearest square inch.

Answers

Answer:  70

Step-by-step explanation:

jasonran 4 miles in 30 minutes which of the following is an equivalent rate of running

Answers

Answer:

10 miles in 75 minutes

Step-by-step explanation:

Sammy draws 3 identical rectangles on his paper. If each rectangle has a base of 15 cm and a height of 12 cm, what is the total area of all 3 rectangles added together?​

Answers

Answer:

540

Step-by-step explanation:

If you do 15x12 which is the formula for area for a rectangle, you get 180. That's only the area of one rectangle but if you multiply it by 3 you get 540 for the areas added together.

Answer:

540 cm

Step-by-step explanation:

you multiply 15 x12 If you are getting an area 15 x12=180 then you multiply 180 by 3  180x3=540 I think

a set of speakers that regularly cost $160 are on clearance for 35% off. Find the sales price of the speakers

Answers

Answer:

I'm pretty sure this is the answer....

The speakers are $56.

Sorry if i'm wrong. :')

Step-by-step explanation:

Answer:

You want to buy something that costs $160, and it's on sale for 35% off. What is the item's sale price?

First, convert the 35% to a real mathematical number. For percents, this is always done by dividing the 35% by 100%, or 35% / 100% = 0.350.

Second, find out what 35% of $160 is. This is the amount of the sale discount. This is always found by mulitplying 0.350 by the item's cost $160, like this:

0.350 x $160 = $56.00.

So for this sale, you'll save $56.00 on this item.

This means, the cost of the item to you is

$160 - $56.00 = $104.00.

Alternatively, you can think about it this way. The item is 35% off. This means you'll pay 65.000% of the total cost (100% - 35% = 65.000%).

Now what's 65.000% of the total cost?

0.650 x $160 = $104.00.

Just like the result above, the sale price on the item is $104.00

Help please will mark brainliest!!!

Answers

Answer:

176.71

Step-by-step explanation:

you can just search up "area of circle calculator and plug in the radius

which of these describes abc?​

Answers

Answer:

A

Step-by-step explanation:

I remember it by:

acute: a cute little angle that is smaller than 90 degrees

Hi, I need the are to this question, I just need to show my work btw​

Answers

what is the question?

the larger of two numbers is twice the smaller. if the larger is x what is the smalller. I NEED HELP PLSSS!!

Answers

Answer:

Easy. The smaller is x/2.

Step-by-step explanation:

2 times is larger, so larger divided by 2 is the smaller.

PLEASE HELP FAST ILL MARK AS BRAINLIEST!!!!! :((

Answers

Hi
Here it is!!!

I did
3x-2=4x
3x-4x=2
-1x=2
-x=2/1
-x=2
x=-2


The DrJOKER

the length and the breadth of a rectangular Garden are 0.8 km and 0.6 km respectively find the length of a wire required to put a fivefold fans around the garden​

Answers

Answer:

Length of wire required for 5 fold of garden = 14 km

Step-by-step explanation:

Given:

Length of rectangle garden = 0.8 km

Width of rectangle garden = 0.6 km

Find:

Length of wire required for 5 fold of garden

Computation:

Perimeter of rectangle = 2[l + b]

Perimeter of garden = 2[0.8 + 0.6]

Perimeter of garden = 2[1.4]

Perimeter of garden = 2.8 km

Length of wire required for 5 fold of garden = 5 x Perimeter of garden

Length of wire required for 5 fold of garden = 5 x 2.8

Length of wire required for 5 fold of garden = 14 km

Josephine owns a dress shop and purchases a dress for $20. She decides to mark up the dress 35% in order to sell it to her customers. What is the amount of profit Josephine will make when she sells a dress to a customer? o Josephine will make a profit of $35 O Josephine will make a profit of $27 O Josephine will make a profit of $10 O Josephine will make a profit of $7​

Answers

Answer:

Josephine will have $15 profit

A point is chosen at random on AK.
What is the probability that the point
will be on FI? Don't forget to reduce.
A B с E F G H I J KI
HHHHHHHHHHHHHH
-10 -8 -6 -4 -2 0 2 4 6 8 10

Answers

Answer: 3/10

Step-by-step explanation: 6/20 reduced = 3/10 for acellus

Probability -

Probability is the branch of mathematics that studies the possible outcomes of given events together with the outcomes' relative likelihoods and distributions.For example, the probability of flipping a coin and it being heads is ½, because there is 1 way of getting a head and the total number of possible outcomes is 2 (a head or tail).

Given,

            A B с E F G H I J KI

           HHHHHHHHHHHHHH

          -10 -8 -6 -4 -2 0 2 4 6 8 10

So,

       The probability that the point will be on FI

                     A B KI C D E E G H J

                         HHHHHHHHH

                     -6 -4 -2 0 2 4 6 8 -10° -8 10

Enter Done q W er t y u i O p a a s d f f gh j k Z X C V b n m X 123 space return .

Learn more about probability  brainly.com/question/11034287

#SPJ2

Make a box-and-whisker plot for the set of data.
21, 27, 27, 25, 21, 13, 18, 25

Answers

Lowest number 13 Highest is 27

1st or lower quartile is 16.5

the median is 21

the 3rd or upper quartile I found between 22 and 24 which would be 23.

Evaluate x2 + 6, when x=8
Help.

Answers

I think it’s 22! I hope this helped
22
8(2)+6=22
you plug in 8 for x then, multiply 8 and 2 to get 16 then, you add the 6 and get 22

Maria and Veronica go to a restaurant Maria orders 4 taco’s and a drink, and pays $7. Veronica orders 3 taco’s and two drinks, and pays $7.75. Write a system of equations and solve to find the cost of each taco and drink.

Answers

Answer:

y=7+4 and y=7+3

Step-by-step explanation:

A simple random sample of size 51 has sample mean of 70.72. The population distribution is approximately normal, with population standard deviation of 16.25. Determine the correct method of finding a 95% confidence interval for the unknown population mean and compute it. z-method: (66.26, 75.18) Cannot compute: the population size is too small. t-method: (66.15, 75.29) z-method: (66.15, 75.29)

Answers

Answer:

z-method: (66.26, 75.18)

Step-by-step explanation:

We have the standard deviation for the population, which means that we use the z-distribution to solve this question.

We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:

[tex]\alpha = \frac{1 - 0.95}{2} = 0.025[/tex]

Now, we have to find z in the Ztable as such z has a pvalue of [tex]1 - \alpha[/tex].

That is z with a pvalue of [tex]1 - 0.025 = 0.975[/tex], so Z = 1.96.

Now, find the margin of error M as such

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

In which [tex]\sigma[/tex] is the standard deviation of the population and n is the size of the sample.

[tex]M = 1.96\frac{16.25}{\sqrt{51}} = 4.46[/tex]

The lower end of the interval is the sample mean subtracted by M. So it is 70.72 - 4.46 = 66.26

The upper end of the interval is the sample mean added to M. So it is 70.72 + 4.46 = 75.18

The correct answer is z-method: (66.26, 75.18)

Alejandra took a taxi home from the airport. The taxi fare was $2 per mile,
and she gave the driver a tip of $5. She paid a total of $49. How far is it from
the airport to Alejandra's home?

Answers

Answer:

22 miles

.......ur welcome.......

49-5=44

44÷2=22

Answer:

The answer is 22miles from the airport to Alejandra's home.

Step-by-step explanation:

2 X 22 = $44

PLUS  $5 dollar tip so that would be:

$44 + $5 = $49


JOE CAN READ 27 PAGES IN 3 HOURS. HOW MANY CAN HE READ IN 9 HOURS?

Answers

The correct answer is 81 hours
Other Questions
PLEASEEEEEEEEEEE HURRY WILL GIVE BRAINLYEST the (nonconservative) force propelling a 1.50 x 103 kg car up a mountain road does 4.70 x 106 j of work on the car. the car starts from rest at sea level and has a speed of 27.0 m/s at an altitude of 2.00 x 102 m above sea level. calculate the work done on the car by the combined forces of friction and air resistance, both of which are nonconservative forces. A survey was given to people who own a certain type of car. What percent of the people surveyed were completely satisfied with the car? the names of 5 students from section a, 6 students from section b and 7 students from section c were selected. the age of all the 18 students was different. again, one name was selected from them and it was found that it was of section b. what was the probability that it was the youngest student of the section b? Select the simile in the passage."Where you going, Jess?" May Belle lifted herself up sleepily from the double bed where she and Joyce Ann slept."Sh," he warned. The walls were thin. Momma would be mad as flies in a fruit jar if they woke her up this time of day. He patted May Belle's hair and yanked the twisted sheet up to her small chin. "Just over the cow field," he whispered. May Belle smiled and snuggled down under the sheet. What is Elizabeth's attitude toward the theater? Discuss the difference between r and p. Choose the correct answers below. r represents the p represents the sample correlation coefficient thing critical value for the correlation coefficient. population correlation coefficient. Click to select your answer(s) 1 - 35 of 35 Type here to search o te Discuss the difference between r and p. Choose the correct answers below. r represents the p represents the critical value for the correlation coefficient. population correlation coefficient. sample correlation coefficient. Click to select your answers) 1.35 of 35 (Laws of Exponents with Integer Exponents LC)Create an equivalent expression for 177 175. one over seventeen raised to the second power one over seventeen raised to the power of negative two 172 172 Can a nation's comparative advantage change over time what factors would make it change? Question 1 (5 points)(01.03 LC)Who came to the Mississippi River Valley to convert Native Americans to Catholicism, but did not try to change their customs? (5 pointaObO cOdSpanish missionaryDutch conquistadorBritish indentured servantFrench missionary Which coordinates BEST represent the y-intercept of the line graphed below? (0, 2) (6, 0) (2, 0) (0, 6) All of his money dash stolen Who won the election of 1932 and what did he promise to do in response to the Depression? What to do if you fail an assessment? What information do you need to find marginal cost ? According to the passage, one right women had under Islamic law was the rightA. To inherit money and propertyB. To represent oneself in courtC. To have legal councilD. To divorce A. Find mB. Using the answer above, Find m methods that play a special role in classes such as init and str are called what? group of answer choices constructors dunder methods instance methods self methods The number of known elements changed very rapidly over a 150-year period. There were 62 known elements in the mid-1800s. How many known elements (total) are there today?. What ocean does Georgia share the border with