(c+d/i)*1/i
(1-(1+i)^-n)/i
(1-(1+im)^-nm*q^nm)/1+im-q
(1-(1+i)^-n*q^n)/1+i-q
Co*(1+i)^-n
1/1+im-q
1/1+i-q
(c+d/im)*1/im
Co*(1+im)^-n*m
(c+d/i+nd)*an¬i-nd/i
(1-(1+im)^-nm)/im
(c+d/im+nd)*an^(m)¬im-nd/im