Does the function y = SiNx have an inverse function on [3 / 2,2] My question is: don't we have the inverse function of SiNx on the interval [- Pai / 2, Pai / 2]

Does the function y = SiNx have an inverse function on [3 / 2,2] My question is: don't we have the inverse function of SiNx on the interval [- Pai / 2, Pai / 2]

No, if you stand up y = SiNx, as long as there are no two or more x on a Y, there will be an inverse function, where XY refers to the inverse function of the original function

Stack 27 small cubes with edge length of 1cm into a large cube. How many square centimeters less is the surface area of this large cube than the sum of all the original small cubes?

The original 27 1 cm cube iron blocks are stacked into a large cube, and the volume sum is 27 cubic centimeters. Because 33 = 27, the edge length of the stacked large cube is 3cm, then: 1 × 1 × 6 × 27-3 × 3 × 6, = 162-54, = 108 (cubic centimeters). A: the surface product of the large cube is 108 square centimeters less than the sum of the original small cubes

The fifth question on the 29th page of the sixth grade second volume mathematics exercise book, quick

[agree with Chenchen's practice]
This is the drawer principle
Any non-zero natural number can be expressed as 4K + 0,1,2,3. In these four cases, two of the five numbers must have the same representation, and the difference is the multiple of 4

Let x = cost, y = Sint, then (Dy) / (DX)=

（cost dt）/(-sint dt)=-cot t

How many centimeters is the circumference of the rectangle?

（3×5+3）×2=36
The circumference of this rectangle is 36 cm

The National Palace needs to paint eight identical pillars in the hall. The perimeter of each pillar is 3.14 meters and the height is 10 meters. On average, 150 grams of paint are used per square meter. How many kilograms of paint are needed to paint these pillars?

Only the sides of the column need to be painted
Paint area of each column
3.14 × 10 = 31.4 (M2)
Paint area of 8 columns
31.4 × 8 = 251.2 (M2)
Paint needed
251.2 × 150 = 37680 (g) ≈ 38 (kg)

Add appropriate operation symbols and parentheses between the numbers to make the equation 4 = 7

(4 + 4) - (4 / 4) = 8 - 1 = 7

Let the function y = y (x) be determined by the equation E ^ y + xy = e, and find y '(0). Please write down the specific process. Thank you

By deriving x on both sides of the equation, we can get y '= - Y / (e ^ y + x) by y'e ^ y + y + XY' = 0. Let x = 0, and the equation in the question is y (0) = 1. Then we can bring these two values into y ', that is, y' (0) = - 1 / E

If the opposite number of a is equal to 2, then the opposite number of the reciprocal of A

If the opposite number of a is equal to 2, then the opposite number of the reciprocal of A
1/2

Add, subtract, multiply, divide or bracket the four halves to make the result equal to 4

It's just continuous division,
(1/2) / (1/2) / (1/2) / (1/2) = (1/2) * 2 * 2 * 2 = 4
The first division sign can also be replaced by a plus sign with parentheses
(1/2 + 1/2) / (1/2) / (1/2)
= 1 / (1/2) / (1/2) = 4
All right