Find a· b.
-$$\mathbf { a } = \langle 1 , - 2 \rangle , \quad \mathbf { b } = \langle - 3,4 \rangle$$
A) $\langle - 2,2 \rangle$
B) $- 5$
C) $- 11$
D) $\langle - 3 , - 8 \rangle$

Name: Find a· b. -\[\mathbf { a } = \langle 1 , - 2 \rangle , \quad \mathbf { b } = \langle - 3,4 \rangle\] A) $\langle - 2,2 \rangle$ B) $- 5$ C) $- 11$ D) $\langle - 3 , - 8 \rangle$
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Question

Quizplus · Accepted Answer

The dot product of vectors a and b is calculated as $ a \cdot b = (1)(-3) + (-2)(4) = -3 - 8 = -11 $.

Find A· B - a=⟨1,−2⟩,b=⟨−3,4⟩\mathbf { a } = \langle 1 , - 2 \rangle , \quad \mathbf { b } = \langle - 3,4 \ranglea=⟨1,−2⟩,b=⟨−3,4⟩

Find A· B
- $\mathbf { a } = \langle 1 , - 2 \rangle , \quad \mathbf { b } = \langle - 3,4 \rangle$