Question

Дано: a(n) a(6)=45 a(14)=-43 S(10) - ?

Answer 1

Берем в систему

a1+5d=45

a1+13d=-43

решаем систему методом вычитания

-8d=88

d=-11

подставляем в любую формулу из двух d

a1-55=45

a1=100

Теперь сума

S(10)=((2a1+d(n-1))/2 )*10

S(10)=200-99/2 *10

S(10)=505

Answer 2

It seems you've provided a sequence of numbers, but it's not clear what the pattern or rule for generating the sequence is. To find the value of S(10), we need to understand the pattern or relationship between the terms in the sequence.

From the information given, we know the following:

a(6) = 45 a(14) = -43

However, there is no direct information about the pattern for generating the sequence a(n). Without knowing the pattern, we can't determine the value of S(10).

If you can provide more information about how the sequence a(n) is generated, I'd be happy to help you find the value of S(10) or any other related questions.