Since January 2014, I have made a fixed deposit of RMB 6000 every year. The end date of each deposit is January 2043. What is the total number of withdrawals at that time? The main thing is that I don't understand the interest rate, and I don't know what the interest rate is,

Suppose that the annual interest rate is x interest = 6000 * x * 1 + 6000 * 2 * x * 1 +... + 6000 * (43-14 + 1) * x * 1 = (1 + 30) * 30 / 2 * 6000 * x = 2790000 x principal = (43-14 + 1) * 6000 = 180000. This algorithm is based on the situation of one year's death, but it is impossible to estimate the difference only with the current interest rate

How to solve this problem depends on the specific formula
A commodity is worth 360 yuan. There are six people bidding, and the one with the highest price will get it. The price offered by the person who bids will be divided among the other five people
Q: what's the highest price for this product? It won't lose money
I mean, if the bidding price exceeds, I will lose money. If it exceeds, I will give up bidding
I'm not very clear. If you don't understand my question, please ask

Let him give X Yuan, then his wealth is (360-x), and other people's wealth is x / 5, then (360-x) > x / 5. When he gets XX, his income is high, and he gets X

Find a mathematical formula
To convert a number from 1 to 100 into a formula of - 160-0 is to bring in 1 to the formula, and the result is - 160. To get 0 from 100 is to get the formula

160/99*x-16000/99,

Counter proof: assuming that P and Q are two odd integers, it is proved that the equation x ^ 2 + 2px + 2q = 0 cannot have rational roots

Suppose two are m, N, then they must be integers
When m and N are both odd numbers, Mn is odd. It is contradictory to Mn = 2q
When m and N are even numbers, Mn is a multiple of 4, which is contradictory to Mn = 2q
When m and N are an odd number and an even number, M + n is an odd number
So: the equation x ^ 2 + 2px + 2q = 0 cannot have rational roots

X ^ 3 (dy / DX) + 2Y = 0, how to solve this differential equation?

Separation of variables method, very easy to solve
x^3/dx=-2y/dy
Two side integration, simplification
y =
C1*exp(1/x^2)
Namely
y =
C1*e^(1/x^2)

Is the plane collinear vector theorem the same as the space collinear vector theorem? Why is the λ of B = λ a unique in the plane vector theorem, but not in the space?

The plane collinear vector theorem is the same as the space collinear vector theorem

Given that the function f (x) = x2-2x, the value range of X ∈ [a, b] is [- 1, 3], then the value range of B-A is______ ．

Because the function f (x) = x2-2x is a decreasing function on the interval (- ∞, 1) and an increasing function on [1, + ∞), we can see that the minimum value of F (x) on R is f (1) = - 1, and f (- 1) = f (3) = 3. When a = - 1, because the range of X ∈ [a, b] is [- 1, 3], there must be 1 ∈ [a, b], so 1 ≤ B and f (b)

The monotone interval of y = cos & # 178; X is obtained by trigonometric function method and derivative method respectively

① Trigonometric function method
y=1/2(2cos²x-1+1)=1/2cos2x+1/2
So the increasing interval of y = 1 / 2cos2x + 1 / 2 is
π+2kπ

After adding a number to the numerator and denominator of fraction 295, if the ratio of numerator and denominator is 19:7, then the number added is______ ．

29 + M5 + M = 197, 19 × (5 + m) = 7 × (29 + m), & nbsp; & nbsp; & nbsp; & nbsp; 95 + 19m = 203 + 7m, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; 12m = 108, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; m = 9; a: this number is 9. So the answer is: 9

General solution of differential equation y '+ 2XY = x

The deformation is y '= x (1-2y), that is dy / (1-2y) = xdx
So - 1 / 2ln | 1-2y | = 1 / 2x ^ 2 + C
Then | 1-2y | = C1 * e ^ (- x ^ 2)
Simplify yourself

Since January 2014, I have made a fixed deposit of RMB 6000 every year. The end date of each deposit is January 2043. What is the total number of withdrawals at that time? The main thing is that I don't understand the interest rate, and I don't know what the interest rate is,