Question 9 -Let P be a point on a page, and suppose that r(t) is a curve that travels through P in a downward direction while curving to the right. Determine the direction of the unit normal N(t) to r at P.

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A: This is a problem of complex analysis.

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A: Reduce the matrix according to row echelon form and reduced row echelon form.

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Q: b

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Q: Find

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A: This is a problem of LPP.