Math Problem Statement

Даны два вектора а=(8,4,1), б=(2,-2,1). Найти вектор с, компланарный векторам а и б, перпендикулярный к вектору а, равный ему по длине и образующий с вектором б тупой угол

Solution

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Math Problem Analysis

Mathematical Concepts

Linear Algebra
Vector Operations
Dot Product
Scalar Multiplication
Geometry of Vectors

Formulas

Vector expression: c = λa + μb
Perpendicularity condition: c · a = 0
Length of vector: |c| = |a|
Dot product: c · b < 0

Theorems

Dot Product Theorem
Perpendicularity Condition
Scalar Multiplication Theorem
Magnitude of a Vector

Suitable Grade Level

Undergraduate Level (Linear Algebra)