2, - 3, - 4, 5 how to calculate 24 o'clock

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• 1. What is the area of the figure enclosed by the curve y = 2x2, the straight line y = - 4x-2, and the straight line y = 1 The area of the figure enclosed by the curve y = 2x2, the straight line y = - 4x-2 and the straight line x = 1 is
• 2. If the length ratio of the three edges of a cuboid passing through a vertex is 1:2:3 and the diagonal length is 214, the cuboid volume is______ ．
• 3. If the area of the triangle formed by the function y equals two-thirds of minus x plus B and the coordinate axis is 12, then B =?
• 4. The system of linear equations x + 2Y = 4K with respect to X and Y is known The solution of 2x + y = 2K + 1 satisfies - 1
• 5. How many microns is a millimeter? How many nanometers is a micron?
• 6. Let the coordinates of a (x, y) satisfy the square of (Y-1) + | x + 7 | = 0, then point a is in the
• 7. If the focus of the parabola is (2,2), and the Quasilinear equation is x + Y-1 = 0, the parabola equation is solved
• 8. Urgent 50 by 0.13 by 0.2 simple algorithm!
• 9. Find the special solution of dy / DX = x + XY ^ / y + YX ^ satisfying the initial condition y (x = 0) = 2
• 10. Variance calculation formula
• 11. As shown in the figure, the area of a point a on the image of the inverse scale function and the rectangle ABCD enclosed by the coordinate axis is 8, then the relation of the inverse scale function is___ ．
• 12. Add add, subtract, multiply and divide between 1, 2, 3, 4 and 5 to make the result equal to 168
• 13. Z = sin (XY) + xiny for the partial derivatives of X and Y respectively
• 14. The equation for finding the line L is that the line L passes through the point (1,0) and the angle between the line L 1: root 3x + y-root 3 = 0 is 30 degrees What do you do when k doesn't exist
• 15. There are () different ways to make a rectangle or square with 36 squares of 1 square meter Please make a table
• 16. Given the function f (x) = 2sinxcos (x + Pie / 6) - cos2x + m when x (x) The minimum value of M is - 3
• 17. Cut some rectangular pieces of paper 3cm in length and 2cm in width. At least several pieces of paper are needed to make a square. What is the relationship between the side length of a square and the length and style of the rectangle?
• 18. Find ∫ ln (e ^ x + 1) / e ^ x DX
• 19. A rectangular conference room is 9 meters long and 8 meters wide. If you use square tiles with a side length of 2 decimeters, how many bricks do you need
• 20. Let the population x obey the normal distribution x ~ n (μ, σ ^ 2), and x1, X2,..., xn be a sample from the population, Let u = [√ n (x - μ)] / σ, then d (U)=（