1) Describe two kinds of problems that you can solve using the dot product. 2) L
ID: 3285166 • Letter: 1
Question
1) Describe two kinds of problems that you can solve using the dot product.2) Let a = -2j +k and b = 2i + sj + 3k
a. Find a x b
b. verify that it is perpendicular to both a and b
okay. so for 1 i am completely lost. please give me simple kind of example problems. so i can understand easily
and for 2a. i found the cross product to be < -6-s , 2 , s+4 > THE "S" IS NOT A TYPO. it is suppose to be a variable.
but after that i get confused because i dont know how to verify that it is perpendicular.
i was about to use the vector i found and cross it with a = 0 and do the same thing and cross it with b = 0
but i dont understand how to do it with a variable.
Explanation / Answer
1.i)work done by a force=W=F.S ii)Magnetic flux is the dot product of the magnetic field and the area vectors 2.a)a = < 0, ?2, 1 > b = < 2, s, 3 > Cross product is actually < ?6?s, 2, 4 > b)Vectors are perpendicular if their dot product = 0 < 0, ?2, 1 >Related Questions
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