Posted by lg on Wednesday, January 2, 2013 at 1:24pm.
4m + 1, m + 1 and 10  m are the first three terms of a geometric sequence. Find t4.

Functions 11: Series and Sequences  Steve, Wednesday, January 2, 2013 at 2:19pm
since the difference is constant,
(m+1)(4m+1) = (10m)(m+1)
m = 9
so the sequence is
35, 8, 19, 46, ...

Functions 11: Series and Sequences  lg, Wednesday, January 2, 2013 at 4:50pm
But they are not geometric sequence..
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