YSITD_TG_Bot1 => #ysitd: <showgan>: 1/[a(a+1)] -> 1/a

YSITD_TG_Bot1 says to #ysitd

<showgan>: 1/[a(a+1)] -> 1/a - 1/a+1

at Thu, Mar 1, 2018 2:00 AM