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Pardon me if the following is incoherent. From what I understood of what my professor said, he was basically saying that when a vector can be written as a linear combination of some vectors in a span, this means, geometrically, that the vector is in the plane that the span of vectors defines. How true is this? And if it is so, does anyone know of a good example that illustrates this point?

Thank you.

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# Span of Vectors

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