Find the value of 2X-4 [x-quarter y squared] + 5 [minus three-thirds x + one-third y squared], where x equals - 1 and y = two-thirds speed Speed, speed

Find the value of 2X-4 [x-quarter y squared] + 5 [minus three-thirds x + one-third y squared], where x equals - 1 and y = two-thirds speed Speed, speed

After reduction: - 2XY squared - 8x-y squared + 8 / 3
In the end, 11 and 1 / 9

Given the square of function y = x-2x-3, then the value range of X is? And the value range of Y is?

Y = x-2x-3 = x-2x + 1 - 1 - 3 = (x-2x + 1) - 4 = (x-1) - 4, X is any real number, that is (- infinity, + infinity) because (x-1) ≥ 0, so y = (x-1) - 4 ≥ 0-4 = - 4, so y ≥ - 4

The known set a = {x | x square - 2x-3 ≤ 0} B = {x | x-a}|

Set a = {x | x square - 2x-3 ≤ 0} = {x | (x-3) (x + 1) ≤ 0} = {x | - 1 ≤ x ≤ 3}
B={x|x-a|

Let z = Z (x, y) be the implicit function determined by the equation xy = e ^ Z-Z, and find a ^ 2Z / axay

e^y-e^x=xy
It is necessary to find the derivative on both sides
e^y*y'-e^x=y+xy'
(e^y-x)y'=(e^x+y)
So y '= (e ^ x + y) / (e ^ Y-X)
When x = 0, e ^ y-e ^ 0 = 0, then e ^ y = 1, then y = 0
So y '(0) = (e ^ 0 + 0) / (e ^ 0-0) = 1 / 1 = 1

Given that AB is opposite to each other, CD is negative reciprocal to each other, and the absolute value of X is equal to twice of its opposite number, what is the value of the third power of X + abcdx + a-bcd

AB is opposite to each other
A+B=0
CD is reciprocal
CD=-1
The absolute value of X is equal to twice its opposite number
|X|=-2X
If x = 0,0 = 0, it is true
If x > 0, | x | = x
X = - 2x, 3x = 0, x = 0, not in line with x > 0
If x

If you can't use brackets, how can addition, subtraction, multiplication and division equal three or four halves? If you can't use brackets, how can addition, subtraction, multiplication and division equal four

1/2÷1/2÷1/2÷1/2=4

According to the graph of the linear function y = - 3x-6, when the function value is greater than zero, the range of X is______ ．

According to the function y = - 3x-6, the intersection points of the function and the two axes are (0, - 6), (- 2, 0), respectively. According to the function image, when the function value is greater than zero, the range of X is x ＜ - 2

A cuboid, 5cm longer, becomes a cube. The surface area increases by 160. How many cubic meters is the volume of this cuboid?

160/4/5=8cm
8 * 8 * (8-5) = 192 CC
=0.000192 M3
The volume of a rectangle is 0.000192 cubic meters

6, 8, 8, 8 are 24 points

(8-6)×8+8=24

x=acos^3 t y=asin^3 t

x=acos^3 t y=asin^3 t
dy/dx=(dy/dt)/(dx/dt)
dy/dt=3asin^2 tcost
dx/dt=-3scos^2tsint
dy/dx=3asin^2 tcost/(-3scos^2tsint)
=-tant