Using solve to find unknown Constant in equation

Hi, I tried to use solve in the following fashion:

if true
  % code
end
syms a x C
Csolve = solve(C+pi*cos(a)+pi*i*sin(a)-C*exp^(i*a)*cos(a)-C*exp^(i*a)*i*sin(a)==0)

However, it returns "Not enough parameters"

Is there a particular missing part here?

Thanks!

Answer 1

[Torsten]

Csolve = solve(C+pi*cos(a)+pi*1i*sin(a)-C*exp(1i*a)*cos(a)-C*exp(1i*a)*1i*sin(a)==0,C)

Best wishes

Torsten.

[Sergio Manzetti]

Dear Torsten, I get the same on this, which is an entirely different operation:

if true
  % code
end
syms a x C k
y = C*exp^(-k*x)*(cos(a*x)+i*sin(a*x)) + exp^(k*x-k)*(cos(a*(1-x))+i*sin(a*(1-x)))*(pi-C*exp^(-k)*e^(i*a));
w = diff(y, x)

[Torsten]

"exp^" should produce an error message, or MATLAB interprets "exp" as a variable name (though undefined in your code from above).

Best wishes

Torsten.

[Sergio Manzetti]

so it should only be exp indeed! Thanks, forgot it there.