Inner matrix dimensions must agree.

Question

Ishan 2014-11-16

0
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https://ww2.mathworks.cn/matlabcentral/answers/162976-inner-matrix-dimensions-must-agree

回答： Roger Wohlwend 2014-11-18

I am trying to integrate the function

f1 = @(x) (1-2*x)*(exp(-i*x))
q = integral(f1,0,1)

however this throws me an error

Error using  * 
Inner matrix dimensions must agree.
Error in @(x,n)(1-2*x)*(exp(-i*n*x))
Error in @(x)f1(x,1)
Error in integralCalc/iterateScalarValued (line 314)
                fx = FUN(t);
Error in integralCalc/vadapt (line 132)
            [q,errbnd] = iterateScalarValued(u,tinterval,pathlen);
Error in integralCalc (line 75)
        [q,errbnd] = vadapt(@AtoBInvTransform,interval);
Error in integral (line 88)
Q = integralCalc(fun,a,b,opstruct);