N = 1s = 4; n = 2S = 10; n = 3S = 22; n = 6S =? Please answer in the following formula. Thank you

N = 1s = 4; n = 2S = 10; n = 3S = 22; n = 6S =? Please answer in the following formula. Thank you

s=190
n1=1 s1=4
n2=2 s2=10
n3=3 s3=22
We can get s (I + 1) = 2Si + 2
So S6 = 190

6s/3s＝（ ）
Help me if you know

2

The binary solutions of 5x + 2Y = 11 and 4x-3y = 5

5x+2y=11 （1）
4x-3y=5 （2）
(1) Formula * 3 plus formula * 2 of (2) leads to
x=43/23
Substituting (2) to get
y=19/23

(- 12) + (- 11) + (- 10) + (- 5) + (- 1) + 9 + 8 + 7 + 6 + 4 + 3 + 2 = 0. What's the mathematical law of this formula? Ask the great God for help

The rule is to eliminate all positive and negative numbers that can make up to zero

What are the names of the rotating univalent hyperboloid and the bivalent hyperboloid?

As the name suggests, it is based on the characteristics of the image formed

Why does ice melt faster in water?

The specific heat capacity of water is large while that of air is small. The temperature of the air around the ice will soon decrease, which will slow down the heat conduction. However, the specific heat capacity of water is large, which will not reduce the temperature soon, so that the heat conduction will continue and fast, so the ice will melt faster when it is placed in the water

When F + FMO = ma, isn't f combined = ma?

According to Newton's second law, f = ma, which is right, but when analyzing the force, the key is to see what force the object is subjected to? Don't memorize the conclusion when analyzing specific problems. When the force F and friction f are in the same direction and they provide the resultant force, f = F + F = ma
In this case: under the action of the external force F along the inclined plane, the object slides down on the rough inclined plane. The resultant force of the object is f = F + F, and the object slows down along the inclined plane

Proof: for any positive integer n, inequality 2 + 3 / 4 + 4 / 9 + +(n + 1) / N ^ 2 > in (n + 1) holds! If BN = (n-2) * (1 / 2) ^ n, find BN + 1 / 4T

First of all, it is easy to prove that if x > 0, then ln (1 + x) LN2 + ln (1 + 1 / 2) + Ln (1 + 1 / N) = ln (n + 1) and then because (n + 1) / N ^ 2 > (n + 1) / N (n + 1) = 1 / N, we can see that the conclusion holds. In addition, we can also use induction, but the last step also needs to be proved
The writing of the second question is ambiguous, so I didn't answer it

How to distinguish south latitude from north latitude, east longitude from west longitude?

Example analysis: teaching junior high school (Grade 7) teaching subject geography example analysis: in the teaching of the chapter "earth and map" in Grade 7 geography Volume 1, there is a difficulty: teachers generally guide students to judge according to the numerical change law of longitude and latitude: north latitude (n), the numerical value increases from south to North (straight

The sum of 5 consecutive even numbers is 160, and the number in the middle is lower X. can you work out X by equation?

Let the number in the middle be X
Then the two on the left are X-2 x-4
The two on the right are x + 2, x + 4
Then (x-4) + (X-2) + X + (x + 2) + (x + 4) = 160
The solution is x = 32