The bus stop is far from here?

The bus stop is far from here?

the bus is far away from here.

Is the sentence "the square difference of two consecutive odd numbers must be a multiple of 8"? Give reasons

The reason is that: (2n + 1) 2 - (2n-1) 2 = [(2n + 1) + (2n-1)] [(2n + 1) - (2n-1)] = (2n + 1 + 2n-1) (2n + 1-2n + 1) = 4N × 2 = 8N, 8N △ 8 = n

Let z = f (U) u = x ^ 2 + y ^ 2 and f (U) be second-order separable?

According to the chain rule:

How to do the simple calculation of 15 × (- 8) of 19 and 16

=-(1 / 20-16) × 8
=-(20 × 8-1 / 16 × 8)
=-(160-1 / 2)
=-159 1 / 2

The year of the teacher's birth, 5 divided by 9, 6 divided by 10, 7 divided by 11, 8 divided by 12

The teacher's year of birth, minus 4, can be divided by 9, 10, 11, 12 at the same time
The least common multiple of 9,10,11,12 is 1980
Generally speaking, the teacher's year of birth is 19 * *, so the year of birth is 1980 + 4 = 1984

It is proved that if a straight line is parallel to two intersecting planes, then the straight line is parallel to the intersecting line of two planes

The two planes are a and B respectively. Given that the straight line is 1, find any straight line on the a plane parallel to the straight line 1. This straight line is 2. Because 2 is parallel to 1, so 2 is parallel to the plane B. then the intersection lines generated by any plane intersecting with the plane B made by passing through the straight line 2 are parallel to the straight line 2, so the lines 2 and 1 intersected by the planes a and B are parallel to the intersecting straight line

Why is it that ice and snow are also formed by water but have different densities

Ice is condensed by water, water is liquid, and the distance between molecules is small. After solidification, the distance between ice is small, and the repulsive force between molecules is dominant, which is difficult to compress. Snow is condensed by water vapor, and the water vapor is gaseous, and the distance between molecules is large. After solidification, the distance between snow molecules is large, the repulsive force is small, and there is a large distance between snowflakes. The density is naturally different

f=ma
A 2000 kg car runs at a uniform speed of 40 m / s and stops 10 seconds after pressing the brake (assuming uniform deceleration)
1. What is the breaking force applied to the car
How far does the truck travel while the brakes are depressed

1. It is stipulated that the direction of the vehicle is positive and the speed is zero in 10 seconds, so the direction of 40 at = 0, a = 4m / S is negative, f = ma = 2000 * 4 = 8000n is negative
2、s=v t -（1/2）at^2=40*10-（1/2）4*100=400-200=200m
I hope the formula is correct

Prove the inequality logn (n-1) · logn (n + 1) < 1, (n > 1)

Let f (x) = ln (x-1) / ln (x), x > = 2F '(x) = (XLN (x) - (x-1) ln (x-1)) / ((x (x-1) (LN (x)) ^ 2) > 0 hold for x > 2. So f (x) is increasing on x > = 2. Then, when n > 1, f (n + 1) > = f (n) ln (n) / ln (n + 1) > ln (n-1) / ln (n) = = > (LN (n-1) / ln (n)) (LN (n + 1) >

A 165 W, 34 S. B 16 e, 75 n. C 170 e, 32 n. D 18 W, 18 s
They belong to the eastern hemisphere, the Western Hemisphere, the southern hemisphere, the northern hemisphere, the high latitudes, the low latitudes, the southern temperate zone and the tropics

They belong to the eastern hemisphere (B.D), the western hemisphere (A.C), the southern hemisphere (A.D) and the northern hemisphere (B.C). They are located in high latitudes (b), low latitudes (d), southern temperate zone (a) and tropical zone (d)