Given A = x = 2 0 -2 5 0 find by inspection a non-zero solution to the system Ax = 0. "By inspection" means just by looking at it, without having to do much calculation. Of course you could row-reduce, but it's good practice for your intuition and conceptual understanding to be able to do this problem by inspection.

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A: There are methods other than elimination method. i.e. matrix method, Simultaneous method.

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