quadgk
in [Matlab]
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From: garima on 29 Jan 2010 15:33 Hi, I am having trouble using QUADGK, i have listed below the error i am getting. Also I need help for defining function with parameter, right now i have given the entire expression for the function(with one parameter) inside the quadgk command, but how can I do it in separate m file? -thanks >> f1(s)=quadgk((@(x)(real((x+sqrt(-1)*0.0001)./(sqrt((x+sqrt(-1)*0.0001).^2 - (0.0025).^2)))).*2320*exp((x+v).*2320)./((exp((x+v).*2320 )+ 1).^2)),-0.1,0.1,[],[],v); ??? SWITCH expression must be a scalar or string constant. Error in ==> quadgk>parseOptions at 531 switch propname Error in ==> quadgk at 149 parseOptions(varargin{:}); >> f1(s)=quadgk((@(x)(real((x+sqrt(-1)*0.0001)/(sqrt((x+sqrt(-1)*0.0001)^2 - (0.0025)^2))))*2320*exp((x+v)*2320)/((exp((x+v)*2320 )+ 1)^2)),-0.1,0.1,[],[],v); ??? SWITCH expression must be a scalar or string constant. Error in ==> quadgk>parseOptions at 531 switch propname Error in ==> quadgk at 149 parseOptions(varargin{:});
From: Michael Hosea on 30 Jan 2010 14:13 Please see my reply to your other thread. -- Mike "garima" <garima.saraswat(a)gmail.com> wrote in message news:1071005563.78867.1264833213704.JavaMail.root(a)gallium.mathforum.org... > Hi, I am having trouble using QUADGK, i have listed below the error i am > getting. Also I need help for defining function with parameter, right now > i have given the entire expression for the function(with one parameter) > inside the quadgk command, but how can I do it in separate m file? -thanks > >>> f1(s)=quadgk((@(x)(real((x+sqrt(-1)*0.0001)./(sqrt((x+sqrt(-1)*0.0001).^2 >>> - (0.0025).^2)))).*2320*exp((x+v).*2320)./((exp((x+v).*2320 )+ >>> 1).^2)),-0.1,0.1,[],[],v); > ??? SWITCH expression must be a scalar or string constant. > > Error in ==> quadgk>parseOptions at 531 > switch propname > > Error in ==> quadgk at 149 > parseOptions(varargin{:}); > >>> f1(s)=quadgk((@(x)(real((x+sqrt(-1)*0.0001)/(sqrt((x+sqrt(-1)*0.0001)^2 >>> - (0.0025)^2))))*2320*exp((x+v)*2320)/((exp((x+v)*2320 )+ >>> 1)^2)),-0.1,0.1,[],[],v); > ??? SWITCH expression must be a scalar or string constant. > > Error in ==> quadgk>parseOptions at 531 > switch propname > > Error in ==> quadgk at 149 > parseOptions(varargin{:});
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