Maths question??

2006-11-13 6:16 am

Find the common difference of the following artithmetic sequence"
a)a-3/2b,a-3/4b,......,a+27/4b
b)write down the 3rd term.
c)what term is a+3/2b?

回答 (1)

2006-11-13 6:45 am

✔ 最佳答案

a)
common difference
= a-3/4/b -(a-3/2b)
= a - 3/4b - a + 6/4b
= 3/4b

b)
3rd term
= a-3/4b + 3/4b
= a

c) a+ 3/2b is the 5th term.

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