Logaritmos

Log_ab = X ? b= a^x

Log_a1 = 0                 Log_aa = 1                  Log_aa^x = X

Log_a(m · n) = Log_am + Log_an           Loga (m/n) = Log_am - Log_an

Log_amⁿ = n · Log_am              Log_a= log_am / n

Logam = log_bm/log_ba

interés simple.                                                                 interés compuesto.

Capital, C.                                                                         Montante, M.

Interés, I.                                                                           M = C (1+r)^t

Rédito o %, R.                                                                    periodos, T.

Tanto por uno, r.                                                              M = C (1+ r/n)^T

r = R/100

I = C R t / 100 = C r t

Anualidades de capitalizacion. -> a        Anualidades de amortizacion.

C = a(1+r) [(1+r)^t - 1] / r                                    Deuda, D.

                                                                             M = D (1+r)^t

a = D · r (1+r)^t/(1+r)^t-1