11th Mathematics NCERT Chapter 7
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– Introduction to Binomial Theorem: Explores the need for binomial theorem for higher powers and introduces the concept of expanding (a + b)^n for positive integral indices.
– Binomial Theorem for Positive Integral Indices: Discusses the expansion of binomials like (a + b)^2, (a + b)^3, and the patterns observed in the coefficients arrangement.
– Pascal's Triangle: Introduces Pascal's triangle as a tool to expand binomials for higher powers and its usage in simplifying calculations【4:0†source】.
– Examples and Exercises: Provides examples and exercises on using the binomial theorem for expansions and calculations, such as comparing values like (1.01)^1000000 and 10000, proving remainders when dividing by 25, and evaluating expressions using binomial theorem【4:1†source】【4:2†source】.
– Historical Note: Offers a historical background on the development of binomial theorem, including the contributions of various mathematicians throughout history【4:2†source】.
Expand the expression (1-2x)^5.
The expansion of (1-2x)^5 is: 1 – 10x + 40x^2 – 80x^3 + 80x^4 – 32x^5.
Using the Binomial Theorem, evaluate (96)^3.
Using the Binomial Theorem, (96)^3 evaluates to 884736.
Expand the expression (2x – 3)^6.
The expansion of (2x – 3)^6 is: 64x^6 – 576x^5 + 2160x^4 – 4320x^3 + 5184x^2 – 3888x + 1296.
Determine which number is larger: (1.1)^10000 or 1000.
(1.1)^10000 is larger than 1000.
Find the expansion of (a + b)^4 – (a – b)^4.
The expansion of (a + b)^4 – (a – b)^4 simplifies to 16ab(a^2 – b^2), hence, evaluating 4^3 + (-4)^3 results in 0.
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