Question

Show that a1, a2, . . ., an, . . . form an AP where an is defined as below an = 9 – 5n.Also find the sum of the first 10 terms.

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Answer 1

Answer:

an =9-5n

Step-by-step explanation:

let n be 1 ,2,3, to find the value of an

now by putting these values of n in equation u will get c.d

if the common diff. will be the same

this means that this equation will form an

a.p

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