Only m is greater than N, and m and N are non-zero natural numbers. A is equal to N / m, B is equal to N + 1 / M + 1. A, who is bigger and who is smaller, why

Only m is greater than N, and m and N are non-zero natural numbers. A is equal to N / m, B is equal to N + 1 / M + 1. A, who is bigger and who is smaller, why

m>n a=m/n,b=(m+1)/(n+1)
Denominator, a = m (n + 1) / N (n + 1) = (Mn + m) / N (n + 1)
b=n(m+1)/n(n+1)=(mn+n)/n(n+1)
Because m > N, a > B

If the inequality 3x-a is less than or equal to 2x and there are only two positive integer solutions, then the value range of a is larger
Please give me a good answer. Thank you,

3X-A

How to calculate 0.99 × 5.7

=(1-0.01)×5.7
=1×5.7-0.01×5.7
=5.7-0.057
=5.643

It is known that an is an arithmetic sequence, and A1 is not equal to 0, Sn is the sum of the first n terms of this sequence. For the sequence {an}, Lim n →∞ n * an / Sn

N * an / Sn = 2An / (a1 + an) = 2-2a1 / (2A1 + (n-1) d) if A1 is greater than zero: D is greater than zero, n →∞ 2A1 / (2A1 + (n-1) d) → 0 N * an / Sn → 2; D is less than zero, n →∞ (2A1 + (n-1) d) → - ∞ - 2A1 / (2A1 + (n-1) d) → 0 N * an / Sn → 2. If A1 is less than zero, the opposite is true. If d = 0, n * an / Sn = 1

How to calculate his coefficients in mathematical polynomials
Quick call is the answer
It's a polynomial, 3x + 2x-5x. That's a polynomial. It seems that polynomials have no coefficients

Except for (x and his number) and constants

Wang Zhuang's weight is 39 kg. How many kg does his blood contain?

39 × 113 × 23 = 2 (kg) a: his blood contains about 2 kg of water

F (x) = x ^ 2, only defined in [1,2], then f (x) is not differentiable at x = 2, because the right derivative does not exist. Am I right to understand this?

For example, expand your domain of definition, f (x) = x ^ 2 [1,2], f (x) = 0 (- ∞, 1) ∪ (2, + ∞), where the left derivative is 4 and the right reciprocal is infinite; similarly, 1 is not differentiable, so 1 and 2 are not differentiable. This is especially true when there is no definition

Try to construct an equation whose solution is x = 3, and work out an application problem according to this equation

A pen costs 7 yuan and a pencil costs 1 yuan. Xiao Ming bought some pens and 5 pencils, which cost 26 yuan. How many pens did he buy? Suppose: bought x pens. From the question meaning: 7x + 5 = 26, solution: x = 3. Answer: bought 3 pens

It is known that the angular alpha and the angular beta are complementary, and the angular alpha is 10 ° smaller than the so-called beta

Known angular alpha and angular beta complement each other: angular alpha + angular beta = 90 degree
And the angle alpha is 10 degrees smaller than the beta: the angle beta alpha = 10 degrees
Through calculation, it can be concluded that: angular beta = 50 °, angular alpha = 40 °, 3-angular alpha-1 / 2-angular beta = 15 °

When x tends to 2, the quadratic - 4 of X is the () infinitesimal of X - 2

Infinitesimal of the same order