1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
PSYCHO15rus [73]
3 years ago
5

Prove that if b is a square matrix then b+b^t is symmetric

Mathematics
1 answer:
WARRIOR [948]3 years ago
6 0
A matrix \mathbf X is symmetric if \mathbf X=\mathbf X^\top. We have

(\mathbf B+\mathbf B^\top)^\top=\mathbf B^\top+(\mathbf B^\top)^\top=\mathbf B^\top+\mathbf B=\mathbf B+\mathbf B^\top

and so \mathbf B+\mathbf B^\top is indeed symmetric.
You might be interested in
Which shows how to solve the equation 3/4x -6 for x in one step
Aleksandr [31]

Answer:

A

Step-by-step explanation:

You can multiply both sides on an equation by the reciprocal to cancel the fraction on the first side.

8 0
1 year ago
Solve using the quadratic formula. Show all work. Write each solution in simplest form. No decimals.
vagabundo [1.1K]

Answer:

A) -2 - i√3 , -2 + i√3

Step-by-step explanation:

Solve using quadratic formula

x² + 4x + 7 = 0

The Almighty Formula

= -b ± √b² - 4ac/2a

Where ax + bx² + c = 0

From the above question

a = 1, b = 4, c= 7

Hence,

-4 ± √4² - 4 × 1 × 7/2 × 1

-4 ± √16 - 28/2

=( -4 ± √-12)/2

Since

b² - 4ac < 0

We have two complex roots

Simplifying

( -4 ± √-12)/2

= -4/2 ± √-12/2

= -2 ± 2√3i/2

= -2 ± √3i

Therefore,

-2 - √3i , -2 + √3i

or

-2 - i√3 , -2 + i√3

Option A , is the correct answer

3 0
2 years ago
Please help don’t understand question!
JulsSmile [24]

Answer:

{ \sf{ - 2 {a}^{5}  + 4 {a}^{4} + 5 {a}^{3} +  \frac{2}{3}a   }}

4 0
3 years ago
Read 2 more answers
Alll yalll on hereeeee go listen to MANNY YM and ERIKDUHP
vladimir1956 [14]

Answer:

Mk lol

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
14.
victus00 [196]

Answer:

Step-by-step explanation:

1 hour = 3600 seconds

Distance traveled in  90 seconds = 5 feet

Distance traveled in 1 second = 5/90

Distance traveled in  3600 seconds  = 5*3600 / 90

                       = 5 * 40 = 200 feet

4 0
3 years ago
Other questions:
  • Ax +by=c solve for y
    5·1 answer
  • Simplify the expression, and explain each step. 1/3*q*3
    9·1 answer
  • 13.) –3(y+3)=2y+3<br> What is the answer to this
    6·2 answers
  • What is the expression for 3 6 and 9
    5·1 answer
  • Steven has a counter that is yellow on one side and blue on the other. The counter is shown below:
    7·2 answers
  • Calculate the area of the figure below using the following information:
    6·1 answer
  • Which aproximation is better for π 22/7 or 3.141592..... Explain.
    14·1 answer
  • HELP PLEASE!! Will mark brainliest to correct answer
    12·1 answer
  • What is the value of (-5)(-8)<br> A 40 <br> B 45 <br> C -40<br> D 13
    6·2 answers
  • 10 points per answer!
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!