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Dúvida em MatLab


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Boa tarde,

Tenho a seguinte dúvida em matlab.

Cálculo do VAL, ROI e da TIR (convergência com diferença entre duas iterações sucessivas inferior a 0,01%) com recurso a MATLAB.

Solicitar grandezas ao utilizador (Ea, ha, It, Pi, a, n, dom)

Já fiz a primeira parte,

TIR=0.1;
deltaTIR=0.001;
iter=0;
Pi=10*10^6;
ha=2500;
precoEE=75*10^6;
io1= 1.2;
n=20;
dom=0.015;
a=0.07;
ka=10.594;
it=12000000;
rl=1695000;

while abs (deltaTIR)>=0.001 & iter<100 
    
    iter=iter+1;
    tir1=(rl/it)*(((1+TIR)^n)-1)/((1+TIR)^n)
    deltaTIR=tir1-TIR;
    TIR=tir1;
  
end 

 val=(rl*ka)-io1
 roi=(rl*ka)/it

Não sei é Solicitar grandezas ao utilizador (Ea, ha, It, Pi, a, n, dom).

Espero que alguem me consiga ajudar.

Obrigada

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