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Problem Metadata

Date: November 17, 2025

Problem Number: #7

Problem Curator: @Phanie

lymphoidcell - Overview

Indonesian version: TBA

Vector Algebra (Component-wise Operations, Dot Product, Norm)

Category: Machine Learning Math - Linear Algebra

Difficulty Level: Beginner

Prerequisites:

• Vector component notation
• Scalar multiplication
• Dot product formula
• Euclidean norm

Also check this out: Supplementary Problems for DAY 7

Problem Statement

Suppose

$$ u = 6i - 2j + 4k $$

and

$$ v = 3i + 7j -k $$