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Topic: How to solve very complex equations in matlab?
Replies: 13   Last Post: Jul 6, 2013 7:20 AM

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Torsten Hennig

Posts: 2,419
Registered: 12/6/04
Re: How to solve very complex equations in matlab?
Posted: Jul 4, 2013 5:34 AM
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> f1,f2,f3,f4 are functions. So, I don't think we can
> add them to a value(sum is initialized to 0).
> these three commands are not working.
> sum1=sum1+f1*f2;
> sum2=sum2+f1*f3;
> sum3=sum3+f1*f4
> I tried it. Please check it once. May be we have to
> initialize in a different way. I have written the
> four functions separately in .m files and called
> them. Once check it if you can.
> Thanks,
> srinath


In my notation, your functions are func_1, func_2, funk_3 and func_4 - f1,f2,f3 and f4 are the values the functions produce for the input arguments x,y,z,a(j) and b(j).
You can define the functions before the for-loop by setting e.g.
func_1 = @(x,y,z,a,b) x+y+z+2*a+4*b;
If your functions are more complicated, you will have to put them in separate m-files which will look like

result1 = func_1(x,y,z,a,b)
result1=x+y+z+2*a+4*b;

Best wishes
Torsten.



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