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## Main Question or Discussion Point

hi all

this is the general problem

X[tex]\ddot{}[/tex]+AX[tex]\dot{}[/tex]+BX=0

let A, B,X be 2*2 matrices

its application is in vibrations.

any opinion will be great

I can solve the first-order but ...

this is the general problem

X[tex]\ddot{}[/tex]+AX[tex]\dot{}[/tex]+BX=0

let A, B,X be 2*2 matrices

its application is in vibrations.

any opinion will be great

I can solve the first-order but ...