CBSE Class 11-science Answered
Please help
Asked by Rahulsinha1993 | 30 Nov, 2009, 10:48: AM
Expert Answer
If a,b,c are in AP then 2b =a+c
2(a-b) = 2(a-(a+c)/2 )=(a-c)
Also 2(b-c) =2 ((a+c)/2 -c) =(a-c)
Answered by | 30 Nov, 2009, 11:53: AM
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