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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §11.1 Vectors and Dot Products, #40 · Multivariable Calculus · Vectors & geometry

By choosing the right vector … in the Schwarz inequality, show that…

By choosing the right vector $W$ in the Schwarz inequality, show that $(V_{1} + V_{2} + V_{3})^{2} \leq 3 (V_{1}^{2} + V_{2}^{2} + V_{3}^{2})$ . What is $W$ ?

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §11.1 Vectors and Dot Products, #40

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