Z = sin (XY) + xiny for the partial derivatives of X and Y respectively

For X is ycos (XY) + LNY, for y is xcos (XY) + X / y

RELATED INFORMATIONS

1. Add add, subtract, multiply and divide between 1, 2, 3, 4 and 5 to make the result equal to 168
2. 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___ ．
3. 2, - 3, - 4, 5 how to calculate 24 o'clock
4. 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
5. 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______ ．
6. 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 =?
7. 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
8. How many microns is a millimeter? How many nanometers is a micron?
9. Let the coordinates of a (x, y) satisfy the square of (Y-1) + | x + 7 | = 0, then point a is in the
10. If the focus of the parabola is (2,2), and the Quasilinear equation is x + Y-1 = 0, the parabola equation is solved
11. 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
12. There are () different ways to make a rectangle or square with 36 squares of 1 square meter Please make a table
13. Given the function f (x) = 2sinxcos (x + Pie / 6) - cos2x + m when x (x) The minimum value of M is - 3
14. 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?
15. Find ∫ ln (e ^ x + 1) / e ^ x DX
16. 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
17. 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)=（
18. The side length of a square is equal to the diameter of a circle. It is known that the perimeter of the square is 20cm. How many square centimeters is the area of the square larger than that of the circle?
19. If lgx = 3.1502, what is x equal to?
20. Put a round scissors into a rectangle, increase the circumference by 8 cm, and find the circumference and area of the circle