CBSE Class 10 Answered
Arithmathic Progression
Asked by toppin | 05 Feb, 2010, 02:37: PM
Expert Answer
am = a0 +(m-1)d = n
an = a0 +(n-1)d = m
Solve these to find a0 and d,
d =(n-m)/(m-n) = -1
a0 = m+n-1
Sm+n = (m+n)(2a0 +(m+n-1)d)/2
= (m+n)(2m+2n-2 - m - n +1)/2
= (m+n)(m+n-1)/2
Regards,
Team,
TopperLearning.
Answered by | 05 Feb, 2010, 02:50: PM
CBSE 10 - Maths
Asked by hanugraha | 30 May, 2010, 07:53: PM
ANSWERED BY EXPERTCBSE 10 - Maths
Asked by hanugraha | 30 May, 2010, 07:13: PM
ANSWERED BY EXPERTCBSE 10 - Maths
Asked by shobhitdc | 29 May, 2010, 04:59: PM
ANSWERED BY EXPERTCBSE 10 - Maths
Asked by ROJAAPPA | 29 May, 2010, 12:58: PM
ANSWERED BY EXPERTCBSE 10 - Maths
Asked by shobhitdc | 29 May, 2010, 10:52: AM
ANSWERED BY EXPERTCBSE 10 - Maths
Asked by devanshmudgal | 28 May, 2010, 07:31: PM
ANSWERED BY EXPERTCBSE 10 - Maths
Asked by shobhitdc | 28 May, 2010, 01:12: PM
ANSWERED BY EXPERTCBSE 10 - Maths
Asked by shobhitdc | 28 May, 2010, 01:08: PM
ANSWERED BY EXPERT
