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Solving matrix with some knowns

2 次查看（过去 30 天）
Anthony Garcia
Anthony Garcia 2020-4-8
回答： Ali Murtatha Shuman 2020-4-9
Hey everyone. I am trying to solve an equation for a physics problem where we
[K][d] = [F].
[d] = [0;
A1;
Y2;
A2;
Y3;
A3;
0;
A4];
[F] = [V1;
M1;
0;
3600;
-500;
0;
V4;
0];
and K =
1.0e+06 *
[0.2633 0.1317 -0.2633 0.1317 0 0 0 0
0.1317 3.1600 -0.1317 1.5800 0 0 0 0
-0.2633 -0.1317 0.3871 -0.0698 -0.1237 0.0619 0 0
0.1317 1.5800 -0.0698 4.1500 -0.0619 0.4950 0 0
0 0 -0.0052 -0.0619 0.0103 0 -0.0052 0.0619
0 0 0.0619 0.4950 0 1.9800 -0.0619 0.4950
0 0 0 0 -0.0052 -0.0619 0.0052 -0.0619
0 0 0 0 0.0619 0.4950 -0.0619 0.9900]
Is there any know commands to solve this equation for me? I declared all the symbols as syms at the start of code. I'm having trouble and any insight is appreciated! Thank you!
Anthony

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回答（1 个）

Ali Murtatha Shuman
If I understood your question correctly, the following command should help.
s =solve(K*d == F)
But note that you have 9 unknown and 8 equation so it is a parametric solution.

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