Find the scalar and vector projections of b onto a. a=(4,7,−4),b=(3,−1,1)

bobbie71G

bobbie71G

Answered

2021-05-17

Find the scalar and vector projections of b onto a.
a=(4,7,4),b=(3,1,1)

Answer & Explanation

Anonym

Anonym

Expert

2021-05-18Added 108 answers

ab=(4,7,4)(3,1,1) =43+7(1)+(4)1 =1274 =1 
|a|=42+72+(4)2 =16+49+16 =81 =9 
compab=ab|a| 
compab=19 
projab=[compab]a|a| 
projab=[19](4,7,4)9=(481,781,481) 
Answer:  compab=19 projab=(481,781,481)

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