Σの計算 演習2
nΣk=1 22k+1
n+1Σk=1 23k-2
n-1Σk=5 2k
nΣk=2 23k
nΣk=1 ( 3k2 + 3k +1 )
nΣk=1 ( 3k -4 )
nΣk=1 ( k -1 )( k -2 )
nΣk=1 22k+1
n+1Σk=1 23k-2
n-1Σk=5 2k
nΣk=2 23k
nΣk=1 ( 3k2 + 3k +1 )
nΣk=1 ( 3k -4 )
nΣk=1 ( k -1 )( k -2 )