What is the function y = x square + absolute value SiNx

What is the function y = x square + absolute value SiNx

Even function

Given the function y = X2, - 2 ≤ x ≤ a, where a ≥ - 2, find the maximum and minimum value of the function, and find the value of the independent variable x corresponding to the maximum and minimum value of the function

① If - 2 ≤ a < 0, the function is reduced in the interval [- 2, a], when x = - 2, ymax = 4, x = a, ymax = A2, ② if 0 ≤ a ≤ 2, x = - 2, ymax = 4, x = 0, ymax = 0, ③ if a > 2, x = a, ymax = A2, x = 0, ymax = 0

There are two piles of coal, 94 tons in pile a and 138 tons in pile B, each carrying 9 tons a day______ Three days later, the remaining coal in pile B is three times that in pile a

（94-9x）×3=138-9x        282-27x=138-9x    282-27x+27x=138-9x+27x        282-138=138+18x-138   &nb...

Is it necessary to use mean inequality to find the minimum value of the function y = x ^ 2 + 2x + 6 / (x-1) (x is greater than 1)? How to do this kind of problem?

Is it y = (X & sup2; + 2x + 6) / (x-1)?
y=(x²+2x+6)/(x-1)
=[(x-1)²+4x+5]/(x-1)
=[(x-1)²+4(x-1)+9]/(x-1)
=(x-1)+9/(x-1)+4≥2√9 +4=10

A batch of goods is equally distributed to Party A and Party B. when the two vehicles transport five times at the same time, two thirds of the goods are transported. It is known that the work efficiency ratio of Party A and Party B is 3:5. How many times does Party A have to transport to complete the assigned task?
Can you push it back?

Each shipment
2/3÷5＝2/15
A each time
2/15÷（3＋5）×3＝1/20
What's left
1－2/3=1/3
A is still in need of transportation
1 / 3 △ 1 / 20 = 20 / 3 times

Find a basic inequality problem of senior one
Given x > 1, find the minimum value of function y = (X & # 178; - 3x + 4) / (2x-2)

y=（x²-3x+4）/（2x-2）=1/2 [(x-2)+2/(x-1)]=1/2 [(x-1)+2/(x-1) -1]>=1/2 [2√2-1]=√2 - 1/2
(Cauchy inequality)
If and only if X-1 = √ 2, x = √ 2 + 1

A freight car and a passenger car are facing each other from two places 210 kilometers away. After 1.5 hours of meeting, it is known that the speed ratio of the freight car and the passenger car is 6:8
Find the speed of the bus

The speed of a bus is 8x and that of a truck is 6x
（6x+8x）*1.5=210
14x=140
x=10
The speed of the bus is 8x = 80
The truck is 60

Given a (0,7), B (0, - 7), C (12,2), take C as a focal point to pass through the ellipse of a and B, the trajectory equation of the other focal point F of the ellipse is ()
A. y2-x248=1B. x2-y248=1C. y2-x248=1（y≤-1）D. x2-y248=1（y≤-1）

So the trajectory of point F is the lower branch of hyperbola with a and B as the focus and the real axis length of 2. Also, C = 7, a = 1, B2 = 48, and the trajectory equation of focus f is y2-x248 = 1 (Y ≤ - 1)

There are two boxes of apples. If you take nine apples out of the first box and put them in the second box, there will be as many apples in the two boxes. If you take twelve apples out of the second box and put them in the first box, the apples in the first box will be twice as many as those in the second box?

Take out 9 apples from the first box and put them in the second basket. The number of apples in the two baskets is the same, indicating that the number of apples in the first basket is 9 * 2 = 18 more than that in the second basket
Take out 12 apples from the second box and put them in the first box. At this time, the number of apples in the first basket is 18 + 12 * 2 = 42 more than that in the second basket
therefore
At this time, the number of apples in the second basket is 42
There were 42 + 12 = 54 apples in the second basket
There were 54 + 18 = 72 apples in the first basket

What day of the week is it today?
Note that what I want is not a question, but an answer. Thank you

The day of the week, the date of the month, and the year
It is Monday,December 13th today.