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ravi soni Grade: Upto college level
        

Dear ,


IItians please solve this problem of vector algebra .


1696_14662_vector.JPG

7 years ago

Answers : (1)

Sona Srivastava
38 Points
										

{(a+b+c)x(a+b)}*c = { (a+b+c)Xa + (a+b+c)Xb }*c
                            = ( axa + bxa + cxa + axb +bxb + cxb )*c

axa = bxb = 0 (vector)
bxa=-axb


                            = ( cxa +cxb )*c


                            = (cx(a+b))*c


                            = - ((a+b)xc)*c


                            = - (a+b)xcxc


                            according to rules of vector triple product , = - (a+b)X(cxc)


cxc = 0(vector)

ans = 0(vector)

7 years ago
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