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Слайды и текст к этой презентации:
№1 слайд
Содержание слайда: Binomial theorem
№2 слайд
Содержание слайда: Binomial theorem. This is the formula that represents the expression for a positive integer as a polynomial:
Note that the sum of the exponents of and is constant and equal to .
№3 слайд
Содержание слайда: - Binomial coefficients, - non-negative integer
Example:
From the set {1,2,3,4}, select all the possible combinations of two elements, = {1,2} {1,3} {1,4} {2,3} {2,4} {3,4} It turns out six options. Substituting values into the formula, we check the result: binomial coefficient Example
№4 слайд
Содержание слайда: The properties of binomial coefficients
The properties of binomial coefficients
1. The sum of the coefficients of expansion is equal to.
It is sufficient to put = 1. Then the right side of Newton's binomial
expansion we will have sum of binomial coefficients, and on the left:
№5 слайд
Содержание слайда: 2. The coefficients members equidistant from the ends of the expansion, are equal.
2. The coefficients members equidistant from the ends of the expansion, are equal.
This property follows from the relation:
№6 слайд
Содержание слайда: 3. The amount of the even terms in the expansion coefficient equal to the sum of the odd terms in the expansion coefficients; each of them is
3. The amount of the even terms in the expansion coefficient equal to the sum of the odd terms in the expansion coefficients; each of them is
To prove this we use the binomial:
Here the even members are sign, and the odd - . As a result turns decomposition 0, therefore, the amount of binomial coefficients are equal to each other, so each of them is: get to prove.
№7 слайд
Содержание слайда: Examples of using the binomial of Newton
Examples of using the binomial of Newton
Example 1. Arrange bean in powers of .
We use the binomial theorem:
The values of the binomial coefficients consistently find the formula
For example
№8 слайд
Содержание слайда: Example 2. Prove formula
Example 2. Prove formula
Substituting in the formula for expansion value
Get the desired result.
№9 слайд
Содержание слайда: Example 3. Prove ratio
Example 3. Prove ratio
We use the recurrence relation
№10 слайд
Содержание слайда: Thank you for attention