How can i find unknown variable in matrix

F=K*D

How can i find D1 D2 in term AE?

[Walter Roberson]

Is AE a matrix or a scalar constant?

[fatih ayça]

Lets say AE=1

Answer 1

[Walter Roberson]

syms D [2 1]
syms AE
sols = solve([0; -2] == AE * [0.405 0.096; 0.096 0.128] * D + [0; 0],D)

sols = struct with fields:
    D1: [1×1 sym]
    D2: [1×1 sym]

simplify([sols.D1; sols.D2])

ans = 

There are other ways that do not require using the symbolic toolbox, if you use the \ operator.

[fatih ayça]

Thank you very much.