| SISTEMAS financieros CLÁSICOS de DESCUENTO |
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| RELACIÓN CON LA
LEY UNITARIA |
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| Función |
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Descuento
Simple Comercial |
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Descuento
Compuesto |
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A(t,p)
= 1 - i·(t-p) con t > p |
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A(t,p)
= (1+i)-(t-p) con t > p |
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| i |
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IZQUIERDA |
DERECHA |
ACUMULADO |
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IZQUIERDA |
DERECHA |
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ACUMULADO |
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| Factor |
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(1+i)-(t2-t1) |
(1+i)t2-t1 |
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1-i·(t1-p) |
1-i·(t2-p) |
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i·(t2-t1) |
i·(t2-t1) |
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| Rédito |
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i·(t2-t1) |
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1-(1+i)-(t2-t1) |
(1+i)t2-t1-1 |
(1+i)-(t1-p)-(1+i)-(t2-p) |
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| Tanto ord. |
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| (1+i)-(t1-p)-(1+i)-(t2-p) |
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i |
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1-i·(t1-p) |
1-i·(t2-p) |
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t2-t1 |
t2-t1 |
t2-t1 |
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| Tanto inst. |
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i |
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loge(1+i) |
loge(1+i) |
(1+i)-(t-p) loge(1+i) |
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1-i·(t-p) |
1-i·(t-p) |
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| NOTA |
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donde,
i = d |
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donde,
i = d / (1-d) |
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Descuento
Simple Racional |
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Descuento
Compuesto |
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A(t,p)
= 1 / [1+i·(t-p)] con t > p |
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A(t,p)
= e-k(t-p) con t > p |
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IZQUIERDA |
DERECHA |
ACUMULADO |
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IZQUIERDA |
DERECHA |
ACUMULADO |
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1+i·(t1-p) |
1+i·(t2-p) |
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| Factor |
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e-k(t2-t1) |
ek(t2-t1) |
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i·(t2-t1) |
i·(t2-t1) |
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i·(t2-t1) |
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| Rédito |
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1-e-k(t2-t1) |
ek(t2-t1)-1 |
e-k(t1-p)-e-k(t2-p) |
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| Tanto ord. |
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i |
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1-e-k(t2-t1) |
ek(t2-t1)-1 |
e-k(t1-p)-e-k(t2-p) |
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| Tanto inst. |
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i |
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k |
k |
k e-k(t-p) |
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| NOTA |
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donde,
i = d |
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donde, ek = 1 + i, =>
k = loge (1+i) |
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donde,
e-k = 1 -
d, => k = - loge (1-d) |
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| Función |
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Descuento
Compuesto |
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| de |
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A(t,p)
= (1-d)t-p con t > p |
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| d |
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IZQUIERDA |
DERECHA |
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ACUMULADO |
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| Factor |
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(1-d)t2-t1 |
(1-d)-(t2-t1) |
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| Rédito |
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1-(1-d)t2-t1 |
(1-d)-(t2-t1)-1 |
(1-d)t1-p-(1-d)t2-p |
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| Tanto ord. |
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t2-t1 |
t2-t1 |
t2-t1 |
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| Tanto inst. |
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-loge(1-d) |
-loge(1-d) |
-(1-d)t-p loge(1-d) |
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| NOTA |
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donde,
d = i / (1+i) |
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