how can i solve this error
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i writed this code and i want to integral the sum of Egb and Egs but i get this error
Error using integral (line 82)
First input argument must be a function handle.
and this error
Error in figure (line 28)
Eg=integral(Egs+Egb,0,TETAmax,TETA);
this is the code
clc
clear all
syms TETA
S0=613e9;
Sp=3.7e9;
Rin=27.5e-3;
Rout=31.5e-3;
h=15e-3;
for t=0.001:0.0001:0.0014;
TETAmax=-3.661*((h/t)^-1.14)+2.589;
DELTAmax=h-t-(h/(2*TETAmax));
R=Rin+(t/2);
Egb=pi*S0*(t^2)*((TETA*4*R)+h-(h*cos(TETA)))/((3^(0.5))*(TETA))
Egs=pi*S0*(h^2)*t*(TETA*sin(TETA)+cos(TETA)-1)/(2*(TETA)^2)
Eg=integral(Egs+Egb,0,TETAmax,TETA);
end
what is wrong?thank you for your help.
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采纳的回答
Walter Roberson
2020-8-2
integral() is reserved for numeric integration. You are doing integration of symbolic expression. You need to use int() or vpaintegral() for that.
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