The following code results in a an empty sym. Would anyone care to comment on (a) why no solution? and (b) how to actually get a solution from the symbolic math toolbox?
reset(symengine);clear all;syms x lambda A k positive;syms eta;lambda = sym(1);k = sym(2*pi);eq1 = A*sin(eta)-10;eq2 = A*sin(k*lambda/6 + eta)-20;eq3 = A*sin(k*5*lambda/12 + eta);% try to solve
b=solve(eq1,eq2,eq3,A,eta,k)% --> answer is [ empty sym ]
subs(eq1,{A,eta,k},{20,pi/6,2*pi/lambda})subs(eq2,{A,eta,k},{20,pi/6,2*pi/lambda})subs(eq3,{A,eta,k},{20,pi/6,2*pi/lambda})
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