# problem to solve this integral in matlab

by hore69
Tags: integral, matlab, solve
 P: 1 hello , somebody could help me to solve in MATLAB this integral? $$r(\alpha) =\frac{1}{\theta} \int_{0}^{\theta} \ e^{-jk*2Rsin(\sigma/2)sin(\sigma/2+\alpha) } \,d\sigma$$ I have tried to solve it but it gives this error : Warning: Explicit integral could not be found. > In C:\MATLAB6p5\toolbox\symbolic\@sym\int.m at line 58 In C:\MATLAB6p5\work\directividadCurvado.m at line 12 ??? Error: Assignment statements do not produce results. (Use == to test for equality.) Error in ==> C:\MATLAB6p5\toolbox\symbolic\@sym\double.m On line 45 ==> D = reshape(eval(X),m,n); Error in ==> C:\MATLAB6p5\work\directividadCurvado.m On line 12 ==> ppp=double(int(exp(-i*k*2*R*sin(x/2).*(sin(x/2)+t)),'x','0','ang')); please help me. Excuse me by my writing. Thanks.
 HW Helper Sci Advisor P: 11,718 U can't solve it. Try Matlab with a simpler integral $$\int e^{\sin x} \ dx$$ Daniel.

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