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how to use if option

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surawut.A
surawut.A 2021-9-16
回答： Cris LaPierre 2021-9-16
Cs=[0.15:0.15:0.45];
Cx=0.12;
C0= 0;
%Erf=(Cs-Cx)/(Cs-C0);
Erf=[0.2 0.6 0.7333]
if Erf > 0 && Erf <=2
z=(-0.3725*(Erf^2))+(1.2144*(Erf))+(0.0006)
else if Erf >2
z=(-0.0109*((Erf)^2))+(0.0577*(Erf))+(0.9235)
end
%Erf formula above pls help to make it calculate and get 3 answer, i try many time still got only 0.6571 only 1 answer (Cs = 0.15 0.30 0.45)
and about if option
I want to use answer from above and let them choose formula, condition if ans<2 use first z formula, if ans>2 use second formula
I cant run with my code please help!
first formula z = -0.3725x^2+ 1.2144x + 0.0006
second z = -0.0109x^2 + 0.0577x + 0.9235

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采纳的回答

Cris LaPierre
Cris LaPierre 2021-9-16
See Ch 13 (Programming) of MATLAB Onramp

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