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Question

Question: <img src="https://cdn.pureessence.tech/canvas_30.png?top_left_x=300&top_left_y=1513&width=300&height...

is equal to

A

a2+b2\mathbf { a } ^ { 2 } + \mathbf { b } ^ { 2 }

B

a2b2\mathbf { a } ^ { 2 } \mathbf { b } ^ { 2 }

C
D

1

Answer

a2b2\mathbf { a } ^ { 2 } \mathbf { b } ^ { 2 }

Explanation

Solution

(a×b)2+(a⋅b)2( \mathbf { a } \times \mathbf { b } ) ^ { 2 } + ( \mathbf { a } \cdot \mathbf { b } ) ^ { 2 }=

=

= = a2b2.1=a2b2\mathbf { a } ^ { 2 } \mathbf { b } ^ { 2 } .1 = \mathbf { a } ^ { 2 } \mathbf { b } ^ { 2 }