Question

Find the scalar product



a.B if a=2i+3j+4k and b=5i-2j+k

Answer 1

Answer:

i hope this is the right answer

Answer 2

The scalar product of a and b is 8.

Step-by-step explanation:

It has been given that

a=2i+3j+4k and b=5i-2j+k

The scalar product of vectors a and b is given by

$a\cdot b=a_1b_1+a_2b_2+a_3b_3\\\\a\cdot b=2\cdot5+3\cdot(-2)+4\cdot1\\\\a\cdot b=10-6+4\\\\a\cdot b=8$

Therefore, the scalar product of a and b is 8.

#Learn More:

Find the cross product of the given vectors.

A = 4 i - j + k and B = i - 2 j - 4 k .

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