solving implicit equation with 3 variables knowing 2 of them
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Omar Shadeed
am 28 Mär. 2018
Kommentiert: Birdman
am 28 Mär. 2018
Hi, I'm trying to solve the the equation shown in the attachment as you see it's function of three variables M,theta, and beta where lamda is 1.4, so given M and theta I would like to get the two corresponding values of beta. I have tried this:
syms beta;
M1= 5;
theta=20*pi/180;
gama=1.4;
eqn=tan(theta)==2*cot(beta)*((M1^2*sin(beta)^2-1)/M1^2*(gama+cos(2*beta)+2));
beta=solve(eqn,beta,'ReturnConditions',true);
% betadeg=beta*180/pi;
vpa(beta)
But I keep getting these errors
Error using sym>tomupad (line 1256)
Unable to convert 'struct' to 'sym'.
Error in sym (line 199)
S.s = tomupad(x);
Error in vpa (line 46)
ss = sym(s);
Error in untitled (line 8)
vpa(beta)
I would really appreciate your help. Thanks.
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