Given the function f (x) = sin (2wx - π / 6) (W > 0), for any m belonging to R, the image of function y = f (x) (x belonging to [M, M + π]) and the line y = 1 have only one intersection, then w =?

Given the function f (x) = sin (2wx - π / 6) (W > 0), for any m belonging to R, the image of function y = f (x) (x belonging to [M, M + π]) and the line y = 1 have only one intersection, then w =?

From the meaning of the title, t = π;
So | w | = 1;
And W > 0;
So w = 1

Find the maximum and minimum value of the function y = 3x ^ 2 + 4 in the interval [- 1,3]

Y = 3x ^ 2 + 4 is a parabola with the opening upward and the axis of symmetry x = 0
On [- 1,3], when x = 3, ymax = 31
When x = 0, Ymin = 4

What is 19 * 33

19*33
=（20-1）*33
=660-33
=627

What is COS-7 degree

cos((-7°))=0.99254615164132

Straight line and equation (17 16:50:34)
Given that the line L passing through point a (1,1) and the slope of - M (M > 0) intersects with x-axis and y-axis respectively at points P, Q, passing through point P and Q, make vertical lines of 2x + y = 0, and the vertical feet are points R and s respectively, find the minimum area of quadrilateral prsq?

Point a (1,1), and the slope is - M (m 0) the straight line is y = - MX + m + 1, and the X and Y axes are respectively P (1 / M + 1,0), q (0, M + 1). The straight line PR is y = (1 / 2) (x-1 / m-1) (x-1 / m-1) (x-1 / m-1) (x-1 / M-1 / m-1), and the straight line QS is y = - MX + m + m + m + m + m + m + m + 1, and the slope is y = - MX + MX + m + 0 (M + 2 / M + 2) / [5] + (M + 5] + (M + 1) / (M + 1) / √ 5, its high rs = (1 / M + 2 / M + 2m + 2m + 2m + 2m + 2m + 3) / √ 5.the area of its rs = (1 / 1 / M + 2m + 2m + 2m + 2m + 2 + + 9 / M + 9m + 14) / 10 ≥ 3.6, If and only if M = 1, take "=" sign
Therefore, the minimum area of quadrilateral prsq is 3.6

Fill in a number in each box of the formula in the diagram. The number should be prime and the vertical form should be true

Because 775 × 3 = 2325575 × 5 = 2875775 × 5 = 3875375 × 7 = 2625575 × 7 = 4025775 × 7 = 5425. Only the results of the first group are prime numbers, so 775 × 33 = 25575

2 / 3x-2 = 3 / 7, solve this equation and 2 / x-3 / X-5 = 1

(3x)/2-2=7/3
3x-4=14/3
3x=14/3+4=26/3
x=26/9
x/2-x/3-5=1
x/2-x/3=1+5=6
3x-2x=36
x=36

The value of Sin & nbsp; 68 ° Sin & nbsp; 67 ° - Sin & nbsp; 23 ° cos & nbsp; 68 ° is ()
A. -22B. 22C. 32D. 1

∵ Sin & nbsp; 23 ° = sin (90 ° - 67 °) = cos67 °, ∵ Sin & nbsp; 68 ° Sin & nbsp; 67 ° - Sin & nbsp; 23 ° cos & nbsp; 68 ° = Sin & nbsp; 68 ° Sin & nbsp; 67 ° - cos67 ° cos & nbsp; 68 ° = - (cos67 ° cos & nbsp; 68 ° - Sin & nbsp; 68 °) = - cos (67 ° + 68 °) = - cos135 ° = 22

The sum of 4 / 7 of a number and 30% of the number is 12.2

Let X be the number
4/7x+30%x=12.2
4/7x+3/10x=61/5
40/70x+21/70x=854/70
61x=854
x=14

Xiao Ming spent 19 days reading a book. How many times did he read it every day? How many times did he read it in 9 days?

1/19 9/19