Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §11.1 Vectors and Dot Products, #14 · Multivariable Calculus · Vectors & geometry

(a) By removing one or more of the twelve clock vectors, make…

(a) By removing one or more of the twelve clock vectors, make the length $∣ V ∣$ as large as possible.
(b) Suppose the vectors start from the top instead of the center (the origin is moved to 12 o'clock, so $v_{12} = 0$ ). What is the new sum $V^{*}$ ?

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §11.1 Vectors and Dot Products, #14

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