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HEY FRIEND HERE'S YOUR ANSWER.
We have our mth term = Am= a+(m-1)d = n...(1)
and our nth term =An=a+(n-1)d = m....(2)
solving (1)&(2) we get....
(m-n)d = n-m
since m-n = -(n-m)
therefore : d = n-m/-(n-m)
• d = -1....(3).
a = m+n-1.......(4)
Hence the rth term is.
r = a+(r-1)d.
r = m+n-1+(r-1)(-1)
Hence r = m+n-r hence proved
HOPE YOU FIND IT HELPFUL.
YOUR FRIEND.
LB...... :-D
We have our mth term = Am= a+(m-1)d = n...(1)
and our nth term =An=a+(n-1)d = m....(2)
solving (1)&(2) we get....
(m-n)d = n-m
since m-n = -(n-m)
therefore : d = n-m/-(n-m)
• d = -1....(3).
a = m+n-1.......(4)
Hence the rth term is.
r = a+(r-1)d.
r = m+n-1+(r-1)(-1)
Hence r = m+n-r hence proved
HOPE YOU FIND IT HELPFUL.
YOUR FRIEND.
LB...... :-D
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