0

Guest

Courses New

Could you please help me by answering this question elaborately.....

Could you please help me by answering this question elaborately.....

Question Image
Grade:12

2 Answers

Arun
25750 Points
4 years ago
Dear student
 
it is (a.b + a.c ) x (a + 2b + 3c)
 
 = (a.b) x a + (a.b) x 2b + (a.b) x 3c + (a.c) x a + (a.c) x 2b + (a.c) x 3c
 
 = 0 + 0 + 3 [ a b c] + 0  – 2 [ a b c] + 0
 
 = [ a b c]
 
Hope it helps
Vikas TU
14149 Points
4 years ago
Dear student 
a.{ b× a + 2 b×b + 3 b×c + c×a + 2c×b + 3 c×c)
a.{ b×a + 3 b×c + c× a - 2 b×c )
a. ( b× a + c× a + b× c)
a.( b×a) + a.( c×a) + a.( b×c)
As a.( b×a) and a.( c×a) =0
So a .( b×c) = [ a b c]
Good Luck 

Think You Can Provide A Better Answer ?

Other Related Questions on Vectors

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More