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Saisinātās reizināšanas formulas

(a+b)2 , (a-b)(a+b), (a+b)3, a3+b3

Vienkāršotā un pakāpeniskā aprēķinašana.

1. Vienkāršotais variants.

1.1.

(a+b)2=a2+2ab+b2

(a-b)2=a2-2ab+b2

1.2.

(a+b)(a-b)=a2-b2

1.3.

(a+b)3=a3+3a2b+3ab2+b3

(a-b)3=a3-3a2b+3ab2+b3

1.4.

a3+b3=(a+b)(a2-ab+b2)

a3-b3=(a-b)(a2+ab+b2)

2. Pakāpeniskais variants.

2.1.

(a+b)2=(a+b)*(a+b)=a2+ab+ba+b2=a2+2ab(jo ab=ba)+b2

(a-b)2=(a-b)*(a-b)=a2-ab-ba+b2=a2+2ab+b2

2.2.

(a+b)(a-b)=a2+ab-ab-b2=(ab noīsinās, jo pretējās zīmes)a2-b2

2.3.

(a+b)3=(a+b) (a+b) (a+b)=(a2+ab+ba+b2) (a+b)=a3+a2b+a2b+ab2+ba2+b2a+b3=a3+3a2b+2ab2+b3

(a-b)3=(a-b) (a-b) (a-b)=(a2-2ab+b2) (a-b)=a3-a2b-a2b+ab2-ba2+b2a+b3=a3-3a2b+3ab2+b3

Izteicām pateicību par materiāla sagatavošanu lietotājām elinaxx


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baaigi slikti reekina sii jaunatne..
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Tu domā kaut kas par manis uzrakstito materiālu vai vispārīgi? :D
snowsnow:2008-12-17 18:02:03
Nevaidzēja formulas slīprakstā likt. Tā būtu pārskatāmāk.
adminadmin:2008-12-29 15:41:33
Убрал наклон у формул. Надеюсь стало лучше.
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