SOLUTION: For the following pair of vectors, find U · V. U = −4i − 3j, V = −i − 2j

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Question 1126859: For the following pair of vectors, find U · V.
U = −4i − 3j, V = −i − 2j
Found 2 solutions by MathLover1, ikleyn:
Answer by MathLover1(20850) About Me  (Show Source):
Answer by ikleyn(52795) About Me  (Show Source):
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On scalar product see the lessons in this site
    - Introduction to dot-product
    - Formula for Dot-product of vectors in a plane via the vectors components
    - Dot-product of vectors in a coordinate plane and the angle between two vectors
    - Perpendicular vectors in a coordinate plane
    - Solved problems on Dot-product of vectors and the angle between two vectors
    - Properties of Dot-product of vectors in a coordinate plane

There are short lessons of the  "HOW TO . . . "  type on Dot-product:
    - HOW TO find dot-product of two vectors in a plane
    - HOW TO find scalar product of two vectors in a coordinate plane
    - HOW TO find the angle between two vectors in a coordinate plane
    - HOW TO prove that two vectors in a coordinate plane are perpendicular