Homework Answers
Solution)
Given, A= 5i-j
B=-i-2j
A) A+B= (5i-j) +(-i-2j) =4i-3j (Ans)
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B) A-B = (5i-j)-(-i-2j) = 6i+j (Ans)
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C) mod(A+B)=sqrt(4^2 + 3^2) =5 (Ans)
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D) mod(A-B) = sqrt(6^2 + 1^2) = 6.08 (Ans)
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