Calculate the value of (3,1)∇(4,2) using the operation ' ∇ ' defined by (a,b)∇(c,d)=ac+bd.
A number or a short expression. Fractions can be typed as 3/2, and spacing doesn't matter.
Solution
From the definition, (3,1)∇(4,2)=(3)(4)+(1)(2)=12+2=14.
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