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.

Accepted Answer

Walter Roberson
Walter Roberson on 2 Aug 2020
integral() is reserved for numeric integration. You are doing integration of symbolic expression. You need to use int() or vpaintegral() for that.
  12 Comments
sajjad barzigar
sajjad barzigar on 4 Aug 2020
normaly between 12 to 20 i think.but they didnt mention any kind of valid range for the answer.
sajjad barzigar
sajjad barzigar on 4 Aug 2020
any way thank you for every thing :)

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