Summation with independent variables as different sized arrays in matlab












0












$begingroup$


I am new to matlab and am learning it on my own. I am trying to solve and graph the following summation in matlab



t = [0:.05:60]

y = [0:1:100]

u = symsum(sin(((n*pi)/h)*y)*(-((2/(n*pi*rho))*(cos(n*pi)-1))*((P1/((mu*(pi^2)*(n^2))/(h^2)))*(1-exp(-((mu*(pi^2)*(n^2))/(h^2))*t))+P2*((((mu*(pi^2)*(n^2))/(h^2))*(cos(omega*t)-exp(-((mu*(pi^2)*(n^2))/(h^2))*t))+omega*sin(omega*t))/(((mu*(pi^2)*(n^2))/(h^2)))^2+(omega^2)))),n,1,10)


All of the other variables in the sum are numbers.



However, I keep getting the following errors:



Error using symengine
Dimensions do not match.

Error in sym/privBinaryOp (line 1002)
Csym = mupadmex(op,args{1}.s, args{2}.s, varargin{:});

Error in * (line 315)
X = privBinaryOp(A, B, 'symobj::mtimes');



How do I correct my code to run correctly?











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$endgroup$












  • $begingroup$
    t and y are row vectors of different sizes. In MATLAB, * is matrix multiplication, and .* is element-wise multiplication, but neither seems applicable.
    $endgroup$
    – Fabio Somenzi
    Dec 5 '18 at 5:03
















0












$begingroup$


I am new to matlab and am learning it on my own. I am trying to solve and graph the following summation in matlab



t = [0:.05:60]

y = [0:1:100]

u = symsum(sin(((n*pi)/h)*y)*(-((2/(n*pi*rho))*(cos(n*pi)-1))*((P1/((mu*(pi^2)*(n^2))/(h^2)))*(1-exp(-((mu*(pi^2)*(n^2))/(h^2))*t))+P2*((((mu*(pi^2)*(n^2))/(h^2))*(cos(omega*t)-exp(-((mu*(pi^2)*(n^2))/(h^2))*t))+omega*sin(omega*t))/(((mu*(pi^2)*(n^2))/(h^2)))^2+(omega^2)))),n,1,10)


All of the other variables in the sum are numbers.



However, I keep getting the following errors:



Error using symengine
Dimensions do not match.

Error in sym/privBinaryOp (line 1002)
Csym = mupadmex(op,args{1}.s, args{2}.s, varargin{:});

Error in * (line 315)
X = privBinaryOp(A, B, 'symobj::mtimes');



How do I correct my code to run correctly?











share|cite|improve this question











$endgroup$












  • $begingroup$
    t and y are row vectors of different sizes. In MATLAB, * is matrix multiplication, and .* is element-wise multiplication, but neither seems applicable.
    $endgroup$
    – Fabio Somenzi
    Dec 5 '18 at 5:03














0












0








0





$begingroup$


I am new to matlab and am learning it on my own. I am trying to solve and graph the following summation in matlab



t = [0:.05:60]

y = [0:1:100]

u = symsum(sin(((n*pi)/h)*y)*(-((2/(n*pi*rho))*(cos(n*pi)-1))*((P1/((mu*(pi^2)*(n^2))/(h^2)))*(1-exp(-((mu*(pi^2)*(n^2))/(h^2))*t))+P2*((((mu*(pi^2)*(n^2))/(h^2))*(cos(omega*t)-exp(-((mu*(pi^2)*(n^2))/(h^2))*t))+omega*sin(omega*t))/(((mu*(pi^2)*(n^2))/(h^2)))^2+(omega^2)))),n,1,10)


All of the other variables in the sum are numbers.



However, I keep getting the following errors:



Error using symengine
Dimensions do not match.

Error in sym/privBinaryOp (line 1002)
Csym = mupadmex(op,args{1}.s, args{2}.s, varargin{:});

Error in * (line 315)
X = privBinaryOp(A, B, 'symobj::mtimes');



How do I correct my code to run correctly?











share|cite|improve this question











$endgroup$




I am new to matlab and am learning it on my own. I am trying to solve and graph the following summation in matlab



t = [0:.05:60]

y = [0:1:100]

u = symsum(sin(((n*pi)/h)*y)*(-((2/(n*pi*rho))*(cos(n*pi)-1))*((P1/((mu*(pi^2)*(n^2))/(h^2)))*(1-exp(-((mu*(pi^2)*(n^2))/(h^2))*t))+P2*((((mu*(pi^2)*(n^2))/(h^2))*(cos(omega*t)-exp(-((mu*(pi^2)*(n^2))/(h^2))*t))+omega*sin(omega*t))/(((mu*(pi^2)*(n^2))/(h^2)))^2+(omega^2)))),n,1,10)


All of the other variables in the sum are numbers.



However, I keep getting the following errors:



Error using symengine
Dimensions do not match.

Error in sym/privBinaryOp (line 1002)
Csym = mupadmex(op,args{1}.s, args{2}.s, varargin{:});

Error in * (line 315)
X = privBinaryOp(A, B, 'symobj::mtimes');



How do I correct my code to run correctly?








summation matlab






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edited Dec 5 '18 at 4:25









Mason

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1,6871630










asked Dec 5 '18 at 4:07









Bryanna BaileyBryanna Bailey

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  • $begingroup$
    t and y are row vectors of different sizes. In MATLAB, * is matrix multiplication, and .* is element-wise multiplication, but neither seems applicable.
    $endgroup$
    – Fabio Somenzi
    Dec 5 '18 at 5:03


















  • $begingroup$
    t and y are row vectors of different sizes. In MATLAB, * is matrix multiplication, and .* is element-wise multiplication, but neither seems applicable.
    $endgroup$
    – Fabio Somenzi
    Dec 5 '18 at 5:03
















$begingroup$
t and y are row vectors of different sizes. In MATLAB, * is matrix multiplication, and .* is element-wise multiplication, but neither seems applicable.
$endgroup$
– Fabio Somenzi
Dec 5 '18 at 5:03




$begingroup$
t and y are row vectors of different sizes. In MATLAB, * is matrix multiplication, and .* is element-wise multiplication, but neither seems applicable.
$endgroup$
– Fabio Somenzi
Dec 5 '18 at 5:03










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