PEP grade 6 Volume 2 Chinese unit 1 composition more than 400 words If it's good, it's better not to be the cartoon on the Internet

People's education press sixth grade Chinese Volume II unit 1 words inventory

Reading and writing
Moving the basic business of steaming and melting hairspring transplanting
Fortunately, a test, exercise into elegance
Naked dedication, no reason to speak seriously, strong wind and heavy rain, full of vitality
Read and remember
Philosophy is handsome, astonished, confused and difficult
The noise, the adventure, the tact and the magnificence
The name is weak, the vassal is full in an instant
Unexpected and thrilling

What is the free variable of linear algebraic equations

Aligned sublinear equations AX = 0
Transform coefficient matrix A into ladder matrix with elementary row
(in this case, the free variables can be determined, but it is better to be reduced to the row simplest form for the convenience of solution)
The variables corresponding to the first nonzero element in the nonzero row are constraint variables, and the rest are free variables
(this is the best way to master, and you don't have to worry about other ways.)

5x squared + 25X + 125 / 4 = 0
Use the matching method!

5x squared + 25X + 125 / 4 = 0
5 (square of X + 5x + 25 / 4) = 0
5 (square of X + 5x + 5 / 2) = 0
The square of 5 (x + 5 / 2) = 0
X = minus 5 / 2

When x = - 2, the value of the quadratic trinomial 2x2 + MX + 4 is equal to 18, then when x = 2, the value of the quadratic trinomial is equal to 18______ ．

When x = - 2, 2x2 + MX + 4 = 18, then M = - 3, substituting M = - 3, x = 2, we can get: 2x2 + MX + 4 = 6, so the answer is: 6

What is n in 18N?
Night?NO?
This n easily destroyed my fragile imagination
Why does n mean to prohibit

You and I want to go together
Once this problem bothered me for a long time
Ask the dog and do not know
I just think it's not allowed
Because the ban doesn't start with n
I seem to understand
Originally NC 18 is no child under 18
Later it became N18 ← and others wrote like this
It just doesn't matter if it's in the front or behind
So it's 18 n

Given that FX is an odd function defined on R, where (0, + ∞) is an increasing function and F1 = 0, then the solution set of FX + 1 < 0 is-----

If the solution set of F (x) is (- ∞, - 1), (0,1), then the solution set of F (x + 1) < 0 is: (- ∞, - 2), (- 1,0)

Given the three vertices a (0,4), B (- 2,6) and C (- 8,0) of a triangle, we can find the equation of the straight line on the three sides of the triangle and the equation of the vertical bisector on the AC side

The equation of AB line is y = - x + 4
The equation of the line where BC is located is y = x + 8
The equation of the line where AC is located is y = 0.5x + 4

A classmate's watt hour meter is marked with the word 3000r / kW. After connecting an electrical appliance, he observed that the turntable of the watt hour meter turned 240 revolutions in 6 minutes,
Calculate the power of the connected electrical appliance

In your question, the unit of electricity meter is wrong. You mean 3000 rpm per kW, but the electricity meter is a device for measuring electricity consumption. Its unit consumption should be energy unit kW * h, which is what we call "degree", not power unit kW. So what you said should be 3000r / kW * H

(1 / 8) zero power * 4 negative quadratic * 2 quartic power

(1 / 8) zero power * 4 negative quadratic * 2 quartic power
=The negative quadratic power of 1 * 4 and the quartic power of 2
=The negative quadratic power of (2 & sup2;) * the quartic power of 2
=The negative fourth power of 2 * the fourth power of 2
=The (minus four + four) power of 2
=The zeroth power of 2
=1

PEP grade 6 Volume 2 Chinese unit 1 composition more than 400 words If it's good, it's better not to be the cartoon on the Internet