The Binomial Theorem
Gbogbo ọrọ náà
Expanding \((a+b)^2\) is easy, and \((a+b)^3\) is manageable, but what about \((a+b)^{10}\)? Multiplying out by hand would be a nightmare. The binomial theorem gives the whole expansion at once, with coefficients you can read straight off using the combination numbers \(^nC_r\) you just learned.
In this lesson you will expand \((a+b)^n\) for a positive integer \(n\), see how the binomial coefficients control each term, and learn to pick out a single specific term using the general term. The neat example \((1+x)^4=1+4x+6x^2+4x^3+x^4\) shows the pattern clearly.
Ebumnobi
- Use the binomial theorem for the expansion of (a + b) to the power n for positive integer n.
- Use the general term of the expansion, including finding a particular term.
Akọmọ Ojú-ẹkọ
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ayẹwo Ẹkọ
Ekele diri gi maka imecha ihe karịrị na The Binomial Theorem. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- What is the expansion of (1 + x)^4? A. 1 + 4x + 4x^2 + 4x^3 + x^4 B. 1 + 4x + 6x^2 + 4x^3 + x^4 C. 1 + 2x + 3x^2 + 2x^3 + x^4 D. 1 + 4x + 6x^2 + 4x^3 + 4x^4 Answer: B
- The binomial coefficients in the row for n = 4 are: A. 1, 3, 3, 1 B. 1, 4, 4, 1 C. 1, 4, 6, 4, 1 D. 1, 5, 10, 10, 5, 1 Answer: C
- In the expansion of (a + b)^n, the powers of a and b in each term add up to: A. r B. n - r C. n D. 1 Answer: C
- What is the term in x^2 in the expansion of (2 + x)^5? A. 10x^2 B. 40x^2 C. 80x^2 D. 160x^2 Answer: C
- The binomial coefficient that multiplies each term is: A. nPr B. nCr C. n! D. r! Answer: B
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Ọ dị na ngwa Green Bridge
Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.
Àwọn Ìwé Tó Dáa Láti Kà
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara The Binomial Theorem? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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