Math Problem Statement

The vectors \(\vec{m} = \langle 2, -5, 0 \rangle\) and \(\vec{n} = \langle 3, 0, -4 \rangle\) are set. Find the scalar value of the vectors \(\vec{m}\) and \(\vec{n}\).

Solution

The problem involves finding the scalar (dot) product of two vectors m\vec{m} and n\vec{n}, where:

m=2,5,0\vec{m} = \langle 2, -5, 0 \rangle n=3,0,4\vec{n} = \langle 3, 0, -4 \rangle

The scalar (dot) product of two vectors m\vec{m} and n\vec{n} is given by the formula:

mn=m1n1+m2n2+m3n3\vec{m} \cdot \vec{n} = m_1 \cdot n_1 + m_2 \cdot n_2 + m_3 \cdot n_3

Now, substitute the components of the vectors m=2,5,0\vec{m} = \langle 2, -5, 0 \rangle and n=3,0,4\vec{n} = \langle 3, 0, -4 \rangle:

mn=(2)(3)+(5)(0)+(0)(4)\vec{m} \cdot \vec{n} = (2)(3) + (-5)(0) + (0)(-4) mn=6+0+0=6\vec{m} \cdot \vec{n} = 6 + 0 + 0 = 6

So, the scalar (dot) product of the vectors m\vec{m} and n\vec{n} is 66.

Would you like more details or have any questions?

Here are 5 related questions to explore further:

  1. How do you calculate the magnitude of a vector?
  2. What is the geometric interpretation of the dot product?
  3. How does the dot product help determine if two vectors are perpendicular?
  4. What is the difference between the scalar product and the vector product?
  5. Can the scalar product ever be negative, and what does that signify?

Tip: The dot product is useful for determining the angle between two vectors. If the result is zero, the vectors are perpendicular.

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Math Problem Analysis

Mathematical Concepts

Vector Algebra
Dot Product

Formulas

\(\vec{m} \cdot \vec{n} = m_1 n_1 + m_2 n_2 + m_3 n_3\)

Theorems

Dot Product

Suitable Grade Level

Grades 10-12