medafvan.py

Created by tahiawalettebaye1

Created on November 09, 2025

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* RENTABILITE DUN ACTIF 
Ri,t = (Pt Pt1+Revt)/(Pt1)

Pt et Pt-1 = Prix de lactif à t et t-1, 
Revt = Revenu éventuelle sur la période 

*MEDAF beta 

Renta exigé = taux sans risque + prime de risque 

MEDAF = modele evaluation des actifs financiers 

E(Ri) = Rf + Bi x (E(Rm) - Rf) 

E(Ri) = Rentab moyenne marche prevision, 
Rf= Taux sans risque
Bi = beta= Volatilite de la rentab de lactif 
E(Rm)  Rf = Prime de risque du marche
E (rm)= rentabilité esperé ou attendu du marché 

* VAN = Ft / (1+Rp)^t - i0

rp = cout du capital (taux)

TIR = taux qui annule la VAN

TIR > CMPC = projet a accepter 

VAN baisse quand TIR augmente et vice versa 

Indice Profit = (VAN / i0) + 1
Projet rentable IP > 1

Rentab d une action = R1 = (Cours 1 - Cours 0 + Div ) / Cours 0

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