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let u--7i+3j and v-2i-j- Find --u+v--^2 ---u-v--^2SolutionAnswer- u+v-.docx

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let u=-7i+3j and v=2i-j. Find ||u+v||^2 -||u-v||^2
Solution
Answer:
u+v=-7i+3j+2i-j
u+v=-5i+2j
|u+v|=[(-5) 2 +(2)
2 ]
|u+v...

let u--7i+3j and v-2i-j- Find --u+v--^2 ---u-v--^2SolutionAnswer- u+v-.docx

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let u--7i+3j and v-2i-j- Find --u+v--^2 ---u-v--^2SolutionAnswer- u+v-.docx

28 jan. 2023

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let u=-7i+3j and v=2i-j. Find ||u+v||^2 -||u-v||^2
Solution
Answer:
u+v=-7i+3j+2i-j
u+v=-5i+2j
|u+v|=[(-5) 2 +(2) 2 ]
|u+v|=29
||u+v||^2=29
u-v=-7i+3j-(2i-j)
u-v=-7i+3j-2i+j
u-v=-9i+4j
|u-v|=[(-9) 2 +(4) 2 ]
|u-v|=97
||u-v||^2=97
||u+v||^2 -||u-v||^2=29-97
||u+v||^2 -||u-v||^2=-68
.

let u=-7i+3j and v=2i-j. Find ||u+v||^2 -||u-v||^2
Solution
Answer:
u+v=-7i+3j+2i-j
u+v=-5i+2j
|u+v|=[(-5) 2 +(2) 2 ]
|u+v|=29
||u+v||^2=29
u-v=-7i+3j-(2i-j)
u-v=-7i+3j-2i+j
u-v=-9i+4j
|u-v|=[(-9) 2 +(4) 2 ]
|u-v|=97
||u-v||^2=97
||u+v||^2 -||u-v||^2=29-97
||u+v||^2 -||u-v||^2=-68
.

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let u--7i+3j and v-2i-j- Find --u+v--^2 ---u-v--^2SolutionAnswer- u+v-.docx

1. let u=-7i+3j and v=2i-j. Find ||u+v||^2 -||u-v||^2 Solution Answer: u+v=-7i+3j+2i-j u+v=-5i+2j |u+v|=[(-5) 2 +(2) 2 ] |u+v|=29 ||u+v||^2=29 u-v=-7i+3j-(2i-j) u-v=-7i+3j-2i+j u-v=-9i+4j |u-v|=[(-9) 2 +(4) 2 ] |u-v|=97 ||u-v||^2=97 ||u+v||^2 -||u-v||^2=29-97 ||u+v||^2 -||u-v||^2=-68