The problem of the system of linear equations of two variables and the system of linear inequalities of one variable Who has a system of linear equations of two variables and a system of linear inequalities of one variable Don't fill in the blanks and choose! It's a group, not one,

The problem of the system of linear equations of two variables and the system of linear inequalities of one variable Who has a system of linear equations of two variables and a system of linear inequalities of one variable Don't fill in the blanks and choose! It's a group, not one,

1) 3 - (a-5) > 3a-4 (3x-8 of A3 (x > - 3)
6）4x-10-4)
7) X-2-2 / 2-x > X-2 / 3 (x > 2)
8) X-6 / 2-x-3 / 4x-3 is greater than or equal to 0 (x is less than or equal to 4)
9) 3 X-2 X-13 (4x + 2)
11) 1-2 / 1 x > 2
12）7x-2(x-3)

In the first half of junior high school, there are 60 linear inequalities of one variable (simple), and 100 linear equations of two variables (also simple), including the answers
It's all calculation questions, not multiple choice questions, fill in the blanks and application questions. It's just calculation questions. Pay attention to the format, and you can become yourself,
For example, the form of the system of linear inequalities of one variable is: 1:7x ＞ 14 + 7 ①
7x ＜ 49, solution: X ＞ 3, solution: X ＜ 7, solution: X ＜ 7
Binary linear equations: 1: x + y = 12 ① x = 9
X-Y = 6, and then y = 3 is obtained by solving (1) - 2, and then x = 9, y = 3 is obtained by substituting (1)
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Seek the elementary one yuan one time inequality system 100, urgent use!
Find the initial system of linear inequalities of one variable with 100 traces,
Don't you save money and work for me?

100?
That's too much. I'll give you 20. I'm tired of typing
1 2x+3>x+1 2 5x+5>x-5
3 2x-1009+7x
9 |-669+46|26+|-5|-3x
11 |-45+54|>4x+47 12 5+6x71-45x 14 8-6x>8-9x
15 25-8x

Z1, Z2, Z3 Z6 is the sixth root of 2 + I, and the principal values of their radiation angles are α 1, α 2 α6
Why is A1, A2, A3. An arithmetic sequence

|2 + I | = √ 52 + I = √ 5 (2 / √ 5 + 1 / √ 5 * I) = √ 5 (COS θ + isin θ), where cos θ = 2 √ 5 / 5, sin θ = √ 5 / 5, θ is an acute angle, then the sixth power of 2 + I follows 5 ^ (1 / 12) [cos (θ + 2K π) / 6 + isin (θ + 2K π) / 6] k = 0,1,2,3,4,5, then the principal value of their auxiliary angle is α k = (θ + 2K π) / 6, k = 0,1

Let f (x, y) have a continuous partial derivative. Given the equation f (x / Z, Y / z) = 0, find DZ

Given that the differential equation dy / DX = KY, K is a real number, what is the original function,

This is a differential equation with separable variables
The original formula is dy / y = kdx
Ln | y | = KX + C1
Next is the form of the simplified solution: take the exponent of E on both sides: e ^ ln | y | = e ^ (KX + C1)
Then: | y | = e ^ KX × e ^ C1
Then y = ± e ^ C1 × e ^ KX
It can be expressed by the constant C, so:
y=Ce^kx