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Christopher Morrow


Last seen: 3 years ago |  Active since 2021

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Iterative loop function for FEA
K=[1 2 -2, 2 1 -5, 1 -4 1] F=[-15 -21 18] Xo=[1 1 1]' r=F-K*Xo alpha=(r'*r)/(r'*K*r) Xn=X+alpha*r I am trying ...

3 years ago | 1 answer | 0

1

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Question


Function of a matrix of variables
I am trying to find minimum and maximum values of f=(1/2*X'*K*X)-(X'*F), where X is a 3x1[X1 X2 X3]' matix of varibles, K is a 3...

3 years ago | 1 answer | 0

1

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Question


Help solving directional cosines
A=[-130.342, -75, -55; -75, -130.342, 65; -55, 65, -130.342] null(A) ans = 3×0 empty double matrix I am tryi...

4 years ago | 2 answers | 0

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