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ЗнанийНет
Автор - chaplygin2003

Последовательность задана условиями C1=-2;Cn+1=Cn-2
Найдите С11

Ответ

Автор - lena25073
d=-2
c11=c1+d(n-1)
c11= -2+(-2)(11-1) = - 2-20= - 22
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