Предмет: Алгебра, автор: MikkiHouse

найдите разность арифметической прогрессии и её члены, обозначенные буквами: -8, -10, a3, ..., a6, ..., an, ..., an+5, ...

Ответы

Автор ответа: Irka22
0
d= a2-a2
d=-10-(-8)=-2
an= a1+(n-1)d
а3=-8+(3-1)*-2=-8-6+2=-12
а6=-8+(6-1)*-2=-8-12+2=-18
аn=-8+(n-1)*-2=-8-2n+2=-6-2n

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