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Find a.b. a=[-2,3], b=[0.7, 1.2]

1 Answer

2 votes

Answer:


a.b =2.2

Explanation:

We are given the following in the question:


a=\langle -2,3 \rangle, b=\langle 0.7, 1.2 \rangle

We have to find the dot product.

Formula:


a = \langle x_1,x_2\rangle\\b = \langle y_1.y_2\rangle\\a.b = x_1y_1 + x_2y_2

Putting the corresponding values we get,


a.b = (-2.(0.7)) + (3.(1.2))\\=-1.4+3.6\\=2.2


a.b =2.2

User Jay Povey
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