CBSE Class 11-science Answered
how is (l-2d)+(l-d)+l mean in AP
Asked by Prateek Kumar | 13 Apr, 2011, 12:00: AM
Expert Answer
An A.P is a progression (sequence) obtained by adding a fixed number to the previous term.
Thus (1-2d) + d = 1-d
(1-d) +d = 1.
Hence 1-2d, 1-d and 1 are in A.P.
Answered by | 13 Apr, 2011, 04:04: PM
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