Quadratic function, quadratic function, inverse proportion function, positive proportion function Hi, Ayu what kind of function, eh?

Supplement:
Inverse hyperbolic function, inverse trigonometric function, power function, polynomial function, piecewise function, Gaussian function, integral function,
The scope includes: functions of real variables, functions of complex variables, functions of one variable, functions of multiple variables,

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1. Given the set M = {y | y = x ^ 2-1, X ∈ r} n = {x | y = √ 3-x & # 178;} then m ∩ n =? The answer I did was - 1
2. As shown in the figure, in diamond ABCD, angle a = 110 degrees, e and F are the midpoint of AB and BC respectively, and EP is perpendicular to point P, then FPC=
3. Known: 1 / (x ^ 2 + X + 1) + 2 / (x ^ 2 + X + 2) + 3 / (x ^ 2 + X + 3) + +x/(x^2+x+x) What is the limit of this formula when x approaches positive infinity?
4. In the triangle ABC, ab = AC, the vertical bisector De of AB intersects AB at point D and AC at point E, if the perimeter of the triangle ABC is 3
5. It is known that the absolute value vector a = 8, the absolute value vector b = 4, the angle between vector a and vector B is 60 degrees
6. An object is subjected to two forces of 3 N and 4 n. what is the range of the resultant force?
7. A and B start from a to B at the same time, and return immediately after arriving at B. when they return, their respective speeds increase by 20%. 1.5 hours after departure, the two vehicles meet. It is known that when B arrives at B, a still has 1 / 5 of the distance from a to ab. how many hours does it take a car to go back and forth between ab?
8. *How to calculate the formula of LG8?
9. Given that the value of X which makes the derivative of function y = X3 + ax2-4 / 3A 0 also makes the value of y 0, what is the value of constant a?
10. This is a parametric equation. To find the first and second derivatives, we need to be a little more specific, x=a cos t y=b sin t I'm in a bit of a hurry
11. I always confuse quadratic function, inverse proportion function and positive proportion function. Who can figure out a way to remember the relationship between these three functions?
12. 1. Positive proportion function 2. Inverse proportion function 3. Primary function 4. How to find the domain of definition of quadratic function? Is it based on the solution set, or what?
13. Given the intersection point P (- 3,4) of the image of a positive scale function and an inverse scale function, find the relationship between the two functions and copy the table
14. A problem of positive proportion function and inverse proportion function It is known that the positive scale function y = ± X and the inverse scale function y = K / X (K ≠ 0) intersect at points a and B. the positive scale function y = MX (m ≠ ± 1, m ≠ 0) intersects the inverse scale function y = K / X (K ≠ 0) at points c and D. is the length of line AB always less than the length of line CD? If not, please prove. If not, request the value range of K when the length of line AB is always less than the length of line CD
15. The analytic expression of the relationship between positive proportion function and inverse proportion function?
16. (on the comparison of positive scale function and inverse scale function) It is known that in the same rectangular coordinate system, the positive scale function y = - 3x and the inverse scale function y = - 6 / X (this is a fraction, you should understand ~) intersect two points P and m below the x-axis, point a is on the negative half axis of the x-axis, and the distance from the origin is 4, Find: (1) the coordinates of P and m (2) Area of triangle map Depressed ……
17. The problem of positive proportion function and inverse proportion function Given that y = Y1 + Y2, Y1 is inversely proportional to χ. When χ = 1, y = 4; when χ = 2, y is equal to 5. Find the value of Y (process) when χ = 4
18. The topic of positive and negative proportion function In the following relation, y is inversely proportional to X A. A person's age y is related to his height X B. The width of a rectangle is constant, and its area y is equal to its length X C. Area y and radius X of a circle D. The divisor is constant, the divisor y and the quotient X
19. What is a positive scale function? What is an inverse scale function?
20. What is an inverse scale function and what is a positive scale function