Find the magnitude of the vector v = (3, -4, 12).

Practice Questions

Q1
Find the magnitude of the vector v = (3, -4, 12).
  1. 13
  2. 14
  3. 15
  4. 12

Questions & Step-by-Step Solutions

Find the magnitude of the vector v = (3, -4, 12).
Correct Answer: 13
  • Step 1: Identify the components of the vector v. The vector v = (3, -4, 12) has three components: 3, -4, and 12.
  • Step 2: Square each component of the vector. Calculate 3^2, (-4)^2, and 12^2.
  • Step 3: Calculate 3^2 = 9.
  • Step 4: Calculate (-4)^2 = 16.
  • Step 5: Calculate 12^2 = 144.
  • Step 6: Add the squared values together. Add 9 + 16 + 144.
  • Step 7: Calculate the sum. 9 + 16 = 25, and then 25 + 144 = 169.
  • Step 8: Take the square root of the sum. Calculate √169.
  • Step 9: Find the square root. √169 = 13.
  • Step 10: The magnitude of the vector v is 13.
  • Vector Magnitude – The magnitude of a vector in three-dimensional space is calculated using the formula |v| = √(x^2 + y^2 + z^2), where x, y, and z are the components of the vector.
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