This section consists of 3 questions. Answer all the questions given.

1.

The first term and the common difference of an arithmetic sequence are a and d respectively. If the sum of the first four terms is 28 and the product of the first two terms is 117, find

(a)

Find the values a and d for which d is negative.

[8 marks]

(b)

Hence, find the sum of the first 10 terms.

[2 marks]

asked by guest
on Nov 22, 2024 at 11:30 pm



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