You will need

- connection to the Internet.

Instruction

1

In order to determine the type of matrix monitor "by eye", and use some of the features that distinguish one species from another. Look at the monitor, not directly but at an angle. The matrix TN is characterized by the fact that when you look at the screen from the observed inversion of the colors of an image, change the contrast and so on.

2

Look at the device screen display from the side – if you see purple tint, most likely, before you the model of the monitor with a matrix type IPS, which a given color is a characteristic sign of the difference, while its absence often indicates the MVA\PVA matrix.

3

Aim at the screen of the monitor perpendicular to view, if you will be noticed that this angle of vision lost color tones of the image. Rather, in this case, you are looking at MVA\PVA matrix.

4

View perpendicular to the screen. If you notice a drop in image contrast, distortion of colors and shades (inversion), it's probably a TN.

5

For a precise definition of the types of matrices of a monitor, enter a query in a search engine the title you are interested in the model. Read reviews and technical characteristics of the device, also please visit the official website and review the information.

6

Please note that the information matrix of the monitor screen can be incorporated in the marking of his model, which is written either on the front side of the hull, or one of the service stickers on the back. The combination of the letters TN, MVA\PVA, TFT and so on in the name suggests that the build was used the type of matrix. Also do not trust the information on labels, as sellers too can make a mistake in specifying the type of matrix. Always read the specifications on the official website or packaging of the device.

Useful advice

When choosing a monitor, consider the features of its matrix.

# Advice 2: How to choose desktop computer

When choosing a desktop

**computer**, it is important to pay attention to a large set of parameters. Modern PCs are very different, not only the inner elements. They have different dimensions and may include a variety of devices.Instruction

1

First, specify the type of desktop

**computer**and that will suit you best. There are several basic types of PCs: classical sets, monoblocks and nettops. In the first case we are talking about usually combined the big system unit and monitor.2

All-in-ones are a hybrid of the system unit and monitor. If you choose a desktop

**computer**for office – get the specified type. Main disadvantages: lack of additional video outputs and the complexity of the replacement components.3

Ideal for home

**computer**and that will not be used for gaming, is a nettop. This device is a smaller analogue of the system unit. Purchase this**computer**, if you care about saving the workplace.4

Stop your choice on the classic

**computer**e, if you want to use all features of modern PCs. Of course, it is important not only to identify the type of device, but also how to relate to the study of its characteristics.5

Select a motherboard and CPU that is suitable to her. To work with office programs can use the processor in the socket FM1 with integrated GPU.

6

Another advantage of the motherboard with a relatively new ports – ability in the future to improve the performance of

**the computer**. Keep this in mind when selecting such elements.7

Specify the amount of RAM. It should not be lower than 3 GB. This is enough even for running powerful applications and games. Pay attention to the frequency of the bus of RAM. Boards for DDR3 it should not be lower than 1033 MHz.

8

Understand the characteristics of the installed graphics card: memory size and bus frequency. For a budget model of video card, these indicators must not be lower than 1 GB and 128 bits, respectively. If you plan to run modern games, increase both figures twice.

9

Don't forget to choose the right monitor. It must correspond to the used graphics card. It is best to buy a widescreen display with a diagonal of 21-25 inches. Naturally, the resolution matrix should not be lower 1366x768 pixels.

# Advice 3: How to solve matrix

A mathematical matrix is an organized table of elements. The dimension

**of the matrix**is determined by the number of rows m and columns n. Under the decision matrix is understood as a set of generalized operations on matrices. There are several types of matrices, some of them are not applicable the number of operations. There is the operation of addition for matrices with the same dimension. The product of two matrices is only if they are coordinated. For any**matrix**is defined by determinants. Also a matrix can be transposed and to determine the minor elements.Instruction

1

Write down the given

**matrix**. Determine the dimensionality. To do this, count the number of columns n and rows m. If for one**matrix**m = n, the matrix is considered to be square. If all the elements**of the matrix**equal to the zero matrix is zero. Define the main diagonal of the matrices. The switching elements are arranged from the upper left corner**of the matrix**to the bottom right. Second, the inverse of a diagonal**matrix**is a by.2

Spend the transposition of a matrix. To do this, replace each matrix row elements on the column elements relative to the main diagonal. The element A21 will be the element A12 in

**the matrix**and Vice versa. At the end of each of the source**matrix**get a new transposed matrix.3

Fold the given

**matrices**if they have the same dimension m x n. To do this, take the first element**of the matrix**A11 and fold it to the corresponding element b11 of the second**matrix**. The result of adding record in a new matrix at the same position. Then fold the elements A12 and b12 of both matrices. Thus complete all rows and columns summing**matrix**.4

Determine whether the given

**matrix is**consistent. To do this, compare the number of rows n in the first**matrix**and the number of columns m of the second**matrix**. If they are equal, perform the product of matrices. For this pairwise multiply each element of the row of the first**matrix**to the corresponding element in the column of the second**matrix**. Then find the sum of these products. Thus, the first element of the resulting**matrix**g11 = A11* b11 + A12*b21 + A13*b31 + ... + а1м*bn1. Perform the multiplication and addition of all works and fill in the result matrix G.5

Find the determinant or determinants for any given

**matrix**. For matrices of the second order - dimension 2 by 2 determinant is the difference of products of elements of main and secondary diagonals**of the matrix**. For the three-dimensional**matrix**formula of the determinant: D = A11* A22*A33 + A13* A21*A32 + A12* A23*A31 - A21* A12*A33 - A13* A22*A31 - A11* A32*A23.6

To find the minor of a particular element of the zero

**matrix**the row and column where is located this item. Then define the determinant of the obtained**matrix**. This will be a minor element.# Advice 4: How to choose the matrix on the laptop

The laptop monitor with an active matrix liquid crystal we used to call simply "the matrix". Every model of laptop they own a certain line, which is not always interchangeable. Therefore, in order to find this element precisely to your gadget, you need to thoroughly know what it model and all of its exact characteristics.

Instruction

1

Determine which matrix is on the laptop. For this guide to any Internet search engine the model of your laptop. Find it on any portal or online store, it doesn't matter. The main thing – to find a description of the technical characteristics. View the following important parameters: the matrix size (in inches). Usually it varies from 8 to 21. You can learn yourself simply measure the monitor diagonally with a ruler, and the resulting number, divide by 2.54. Also important is the resolution (number of pixels). Will look like this: 800x600; 1280x800; 1440x900. Determine the type of backlight your laptop. The most expensive models has a led backlight, and inexpensive models are equipped with a lamp. But there are exceptions.

2

If you define a matrix type over the Internet has failed – then disassemble the laptop and see the name directly on the element. There are a lot of options – maybe one or two, with additional fixtures and electronics.

3

Choose a manufacturer that supplies a matrix for your laptop and locate its center in your city. Then order it or just take the laptop to the authorized center where specialists will replace this important item.

4

Keep in mind that the most well-known manufacturers of matrices:

short designation "B" - AU Optronics – for example, B101AW03, B173RW01.

short designation "CLAA" - Chunghwa – for example, CLAA101NB03A .

short designation "N" - Chi Mei, for example, N156B6-L06 Rev.C1.

short designation "TX" - Hitachi TX39D80VC1GAA for example, TX36D97VC1CAA 14.1". these matrices have different internal decoding.

short designation "LP" LG Philips - for example, LP101WSA (TL)(B1), LP173WD1 (TL)(A1).

short designation "LTN" - Samsung - for example, LTN101NT02-101, LTN173KT01.

short designation "LTD" - Toshiba Matsushita, for example, LTD121EXVV, LTD133EE10000.

short designation "B" - AU Optronics – for example, B101AW03, B173RW01.

short designation "CLAA" - Chunghwa – for example, CLAA101NB03A .

short designation "N" - Chi Mei, for example, N156B6-L06 Rev.C1.

short designation "TX" - Hitachi TX39D80VC1GAA for example, TX36D97VC1CAA 14.1". these matrices have different internal decoding.

short designation "LP" LG Philips - for example, LP101WSA (TL)(B1), LP173WD1 (TL)(A1).

short designation "LTN" - Samsung - for example, LTN101NT02-101, LTN173KT01.

short designation "LTD" - Toshiba Matsushita, for example, LTD121EXVV, LTD133EE10000.

# Advice 5: How to find cofactor of the matrix

Algebraic

**Supplement**is one of the concepts of matrix algebra applied to the elements**of the matrix**. Finding algebraic additions is one of the steps of the algorithm for determining the inverse matrix, and matrix operations division.Instruction

1

Matrix algebra is not only an important topic in higher mathematics, but a set of methods for solving various applied problems by constructing a linear system of equations. The matrix used in economic theory and in the construction of mathematical models such as linear programming.

2

Linear algebra describes and examines a number of operations on matrices, including addition, multiplication, and division. The last action is conditional, it is actually multiplying by the inverse of the second. And then pass on using the algebraic complement of matrix elements.

3

The concept of an algebraic complement directly follows from two other fundamental definitions of matrix theory. It's determinant and minor. Determinant of a square matrix is a number which is obtained by the following formula based on values of elements:∆ = a11•a22 – a12•a21.

4

*Minor of a matrix is its determinant, whose order is one less. The minor of any element is obtained by removing from the matrix the row and column corresponding to the item number of the item. I.e. the minor of matrix M13 is equivalent to the determinant obtained after striking out the first row and third column:M13 = a21•a32 – a22•a31.*

5

To find the cofactor of matrix, define the appropriate minors of its elements with a certain sign. The sign depends on in which position the element. If the sum of numbers of row and column is an even number, then the cofactor will be a positive number, if odd, negative. Ie:Aij = (-1)^(i+j)•Mij.

6

*Example.Calculate algebraic additions.*

7

*Solution:A11 = 12 - 2 = 10;A12 = -(27 + 12) = -39;A13 = 9 + 24 =33;A21 = -(0 - 8) = 8;A22 = 15 + 48 = 63;A23 = -(5 - 0) = -5;A31 = 0 - 32 = -32;A32 = -(10 - 72) = 62;A33 = 20 - 0 = 20.*