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September 19, 2014

September 19, 2014

Posted by **d 1st term of an ap is twice the common difference find in terms of the 5th term of the a** on Saturday, October 20, 2012 at 11:51am.

- maths -
**Reiny**, Saturday, October 20, 2012 at 12:30pma = 2d

term1 = 2d

term2 = a+d = 2d+d = 3d

term3 = a + 2d = 2d + 2d = 4d

term4 = 5d

term5 = 6d

etc

so you can let d be any value, say d= 5

then the 5 terms are

10 15 20 25 30

if d = 17

terms are 34 51 68 85 102

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