if r satisfies the equation r x (i +2 j+ k)= i-k then for any scalar m , r is eqaul to?????

Question

ng29 · Answer

consider r =ai+bj+ck and solve lhs by using crosss product now get single equations in i,j and k compare coefficients of i, j and k and u get the desired vector approve if useful

ng29 · Answer

wait …..wait........ what is m ?????

mansi dabriwal · Answer

i tried through that only ….but don know what this m...stands for... options for this ques. … a) i+m(i+2j+k) ​b) j+ m(i+2j+k) ​c) k+m(i+2j+k) ​d) i- k +m (i+2j+k)

ng29 · Answer

answer is b) now i understand that what is m when u compare the both sides u does not get exact coeffiicients of r i am solving completely for u let r=ai+bj+ck on taking cross product and comparing we get a=c , b=2c+1 put these values in r we get r = ci+(2c+1)j+ck r = j + c(i+2j+k) in options they had considered m in place of c APPROVE IF USEFUL

mansi dabriwal · Answer

k...i got it...thanx...

ng29 · Answer

my pleasure

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if r satisfies the equation r x (i +2 j+ k)= i-k then for any scalar m , r is eqaul to?????

if r satisfies the equation r x (i +2 j+ k)= i-k then for any scalar m , r is eqaul to?????

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