eileenxmata
eileenxmata
12-02-2018
Mathematics
contestada
Find a ⋅ b. a = <7, 4>, b = <3, 5>
Respuesta :
sqdancefan
sqdancefan
12-02-2018
a · b = 7·3 +4·5 = 21 +20 = 41
Answer Link
hisroyal1
hisroyal1
12-02-2018
Answer = 41
Explanation
a · b is a scalar product.
a = <x₁, y₁> = <7, 4>
x₁ = 7
y₁ = 4
b = <x₂, y₂> = <3, 5>
x₂ = 3
y₂ = 5
a · b = (x₁ * x₂) + (y₁ * y₂)
= (7 * 3) + (4 * 5)
= 21 + 20
= 41
a · b = 41
Answer Link
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