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) = (10-m)-(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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