Question: (a) Explain why the formula for the Euclidean norm in R2 follows from the Pythagorean Theorem. (b) How do you use the Pythagorean Theorem to

(a) Explain why the formula for the Euclidean norm in R2 follows from the Pythagorean Theorem.
(b) How do you use the Pythagorean Theorem to justify the formula for the Euclidean norm in R3? Hint: Look at Figure 3.1.

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