Saturday, April 11, 2009

`a_1 = 5, d = 6` Write the first 5 terms of the arithmetic sequence.

To find nth term of arithmetic sequence, we use a_n formula.



`a_n = a+(n-1)d `


Given `a_1 = a = 5` and `d= 6`


when


`n= 2, a_2 = a+(2-1)d = a+d = 5+6 = 11 `


when


`n= 3, a_3 = a+(3-1)d = a+ 2d = 5 + 12 = 17 `


when


`n= 4, a_4 = a+(4-1) d = a+3d = 5 + 18 = 23 `


when


`n= 5, a_5 = a+(5-1)d = a+ 4d = 5 + 24 = 29 `


Hence the first five terms of the sequence is 5, 11,17, 23 and 29

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