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Linear Algebra

Linear algebra is the detailed study of vector spaces. With applications in such disparate fields as sociology, economics, computer programming, chemistry, and physics, including its essential role in mathematically describing quantum mechanics and the theory of relativity, linear algebra has become one of the most essential mathematical disciplines for the modern world. Please direct all questions regarding matrices, determinants, eigenvalues, eigenvectors, and linear transformations into this category.

2,176 Questions

What are the steps to find scale?

Depending on what scale you want to find, you would follow a series of half steps and whole steps from a tonic note upwards until you reach the tonic again.

For example: Given the knowledge that the major scale has 2 whole steps, 1 half step, 3 whole steps, and 1 half step, you can find any major scale from any given tonic.

Why can linear functions be described using ponit slope form?

Linear functions can be represented by a straight line in space. One way to define a straight line uniquely is to use its slope (or direction vector) and any one point on the line.

How can you recognize a linear function by its graph?

The graph will be that of a straight line with the basic form of y=mx+b.

How do you graph x plus 2y-4?

x+2y=4. choose random values for x, sub in to get y, and then plot as points in format (x,y)

i.e. x=1, 1+2y=4, 2y=3, y=1.5, point 1,1.5

x=2, 2+2y=4, 2y=2, point 2,2. plot both.

min of 2 points for a line

If you multiply y-7 and y-2 what is the answer?

(y-7)(y-2) => y² - 2y - 7y + 14

Answer: y² - 9y + 14.

Why time is taken in the X-axis in a distance time graph?

Because time is considered to be the independent variable, with distance being dependent on the time elapsed since some starting point.

Also, distance can be treated as function of time but time will not be a function of distance unless the object is always moving away from the initial position. If the object is stationary or returning, the distance-to-time relationship becomes one-to-many which is not permitted for a function.

What is the initial value for x squared?

X (or any letter) is a variable; you can not know the initial value unless the question specifically states what it is.

It can be manipulated into varying written forms; but the X notation itself will remain a variable.

When given a variable in the form of a letter; the only thing you can typically assume is that it is different from the other letters in the equation in some way or it would likely just have the same letter used multiple times throughout. (though this is not always an accurate assumption, there are cases where different letters end up being the same number, they just were not known at the start of the equation and are thus being represented by different variable letters)

Alternate written methods:

X to the second power = X^2 = (X)(X)

What is linear probing in datastrcutures?

When a collision occurs in an open addressing hash table, continuing forward until finding an empty slot is called liner probing.

What is the answer to negative 3 times the quantity of 6x plus 5 over 8 equals 6x-1 negative 3 times the quanitiy of 6x plus 5 are all over 8?

-3*6x+5/8=6x-1 * (-3*(6x+5))/8?

If this is your question, then:

LHS = -3 * 6x + 5/8 = -18x + 5/8

RHS = 6x - 1 * (-18x-15)/8 = 6x + (18x+15)/8 = 48x/8 + 18x/8 + 15/8 = 66x/8 + 15/8

-18x + 5/8 = 66x/8 + 15/8

66x/8 + 18x = 15/8 - 5/8

210x/8 = 10/8

210x = 10

x = 10/210 = 1/21

Can you live with only half your brain?

Yes, some people are born with not all of their brain, or they have it and not all of it works.

People can also be injured or have a medical problem that causes their brain not to all work.

But you can still function with half your brain, you may have to learn your whole life over, there are different cases, but yes, it is possible.

What is quasi linear system?

A control framework in which the connections between the information and yield signs are generously straight in spite of the presence of nonlinear components.

What is the answer to n-29 equals -53?

this is what you have to do

n-29=-53

n=-53+29

n=-24