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## Main Question or Discussion Point

Hi,

Could anyone give me a proof for the following theorem?

Theorem : Ax=0 has a non-trivial solution iff det(A)=0

Thanks in advance.

/Sunny

Could anyone give me a proof for the following theorem?

Theorem : Ax=0 has a non-trivial solution iff det(A)=0

Thanks in advance.

/Sunny