![\rm \: = \:[ \vec{A}.\vec{A} + \vec{A}.\vec{B} + \vec{B}.\vec{A} + \vec{B}.\vec{B}] - [\vec{A}.\vec{A} - \vec{A}.\vec{B} - \vec{B}.\vec{A} + \vec{B}.\vec{B}]](/tpl/images/2490/1616/eb014.png)
![\rm \: = \: [ { |\vec{A}| }^{2} + \vec{A}.\vec{B} + \vec{A}.\vec{B} + { |\vec{B}| }^{2}] - [ { |\vec{A}| }^{2} - \vec{A}.\vec{B} - \vec{A}.\vec{B} + { |\vec{B}| }^{2}]](/tpl/images/2490/1616/e799d.png)
![\rm \: = \: [ { |\vec{A}| }^{2} + 2\vec{A}.\vec{B} + { |\vec{B}| }^{2}] - [ { |\vec{A}| }^{2} -2 \vec{A}.\vec{B} + { |\vec{B}| }^{2}]](/tpl/images/2490/1616/ae602.png)
Show that: |A⃗ + B⃗ |² - |A⃗ - B⃗ |² = 4 A⃗.B⃗ .
...
Mathematics, 04.10.2021 20:30 rave35
Show that: |A⃗ + B⃗ |² - |A⃗ - B⃗ |² = 4 A⃗.B⃗ .
Answers: 3
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 22:30, angeleyes4u610p6np54
Which of the following would be a reasonable estimate for the weight of a pencil? a. 1 × 10^-20 lb b. 1 × 10^20 lb c. 1 × 10^2 lb d. 1 × 10^-2 lb
Answers: 1
Mathematics, 22.06.2019 01:00, shayshayyy41
Ataxi company charges $3 for pick-up plus $0.65 for each mile. select the expressions that represent the cost in dollars for a taxi pick-up and m miles. mark all that apply.
Answers: 1
Mathematics, 22.06.2019 01:40, savthespice
Manuela solved the equation below. what is the solution to manuela’s equation?
Answers: 2
You know the right answer?
Questions in other subjects:
Biology, 05.07.2019 01:00
Social Studies, 05.07.2019 01:00
Social Studies, 05.07.2019 01:00
Mathematics, 05.07.2019 01:00
