Q1(x)=((x-x2)(x-x3))/((x1-x2)(x1-x3))=((x-6)(x-12))/((3-6)(3-12))=(x-6)(x-12)/27
Q2(x)=((x-x1)(x-x3))/((x2-x1)(x2-x3))=((x-3)(x-12))/((6-3)(6-12))=-(x-3)(x-12)/18
Q3(x)=((x-x1)(x-x2))/((x3-x1)/(x3-x2))=((x-3)(x-6))/((12-3)/(12-6))=(x-3)(x-6)/54
L(x)=y1Q1(x)+y2Q2(x)+y3Q3(x)=286(x-6)(x-12)/27-250(x-3)(x-12)/18+394(x-3)(x-6)/54=
572(x2-18x+72)/54-750(x2-15x+36)/54+394(x2-9x+18)/54=4x2-48x+394
y1=4·32-48·3+394=286
y2=4·62-48·6+394=250
y3=4·122-48·12+394=394
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Автор | Тема: кто поможет Алине?.. (Прочитано 27877 раз) |
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