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Prove that vectors vec u=(a l+a1l1) hat...

Prove that vectors ` vec u=(a l+a_1l_1) hat i+(a m+a_1m_1) hat j+(a n+a_1n_1) hat k` ` vec v=(b l+b_1l_1) hat i+(b m+b_1m_1) hat j+(b n+b_1n_1) hat k` ` vec w=(c l+c_1l_1) hat i+(c m+c_1m_1) hat j+(c n+c_1n_1) hat k` are coplanar.

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Let V be the volume of the parallelepiped formed by the vectors vec a = a_i hat i +a_2 hat j +a_3 hat k and vec b =b_1 hat i +b_2 hat j +b_3 hat k and vec c = c_1 hat i + c_2 hat j + c_3 hat k . If a_r, b_r and c_ r, where r = 1, 2, 3, are non-negative real numbers and sum_(r=1)^3(a_r+b_r+c_r)=3L show that V le L^3

Let vec a = a_1 hat i + a_2 hat j+ a_3 hat k;vec b = b_1 hat i+ b_2 hat j+ b_3 hat k ; vec c= c_1hat i + c_2 hat j+ c_3 hat k be three non-zero vectors such that vec c is a unit vector perpendicular to both vec a & vec b . If the angle between vec a and vec b is pi/6 , then |(a_1,b_1,c_1),(a_2,b_2,c_2),(a_3,b_3,c_3)|^2=

The equation of the line passing through the points ( a_1 hat i+a_2 hat j+a_3 hat k ) and parallel to ( b_1 hat i+b_2 hat j+b_3 hat k ) is (a) vec r=(a_1 hat i+a_2 hat j+a_3 hat k)+lambda(b_1 hat i+b_2 hat j+b_3 hat k) (b) vec r=(a_1 hat i+a_2 hat j+a_3 hat k)-t(b_1 hat i+b_2 hat j+b_3 hat k) (c) vec r=a_1(1-t) hat i+_2(1-t) hat j+a_3(1-t) hat k+t(b_1 hat i+b_2 hat j+b_3 hat k)dot (d) None of these

If vec a=a_1 hat i+a_2 hat j+a_3 hat k ,\ vec b=b_1 hat i+b_2 hat j+b_3 hat k and vec c=c_1 hat i+c_2 hat j+c_3 hat k , then verify that vec axx( vec b+ vec c)= vec axx vec b+ vec axx vec c

Let overset(to)(a) =a_(1) hat(i) + a_(2) hat(j) + a_(3) hat(k) , overset(to)(b) = b_(1) hat(i) +b_(2) hat(j) +b_(3) hat(k) " and " overset(to)(c) = c_(1) hat(i) +c_(2) hat(j) + c_(3) hat(k) be three non- zero vectors such that overset(to)(c ) is a unit vectors perpendicular to both the vectors overset(to)(a ) and overset(to)(b) . If the angle between overset(to)(a) " and " overset(to)(b) is (pi)/(6) then |{:(a_(1),,a_(2),,a_(3)),(b_(1),,b_(2),,b_(3)),(c_(1),,c_(2),,c_(3)):}|^2 is equal to

Obtain the condition for the two vectors vec(A) = x_(1) hat(i) + y_(1)hat(j) + z_(1) hat(k) and vec(B) = x_(2) hat(i) = x_(2) hat(i) + y_(2) hat(j) + z_(2) hat(k) to be parallel ?

The value of hat i *( hat jxx hat k)+ hat j*( hat ixx hat k)+ hat k*( hat ixx hat j) is (A) 0 (B) 1 (C) 1 (D) 3

Show that the vectors vec a=-2 hat i-2 hat j+4 hat k ,\ vec b=-2 hat i+4 hat j-2 hat k\ a n d\ vec c=4 hat i-2 hat j-2 hat k are coplanar.

Find lambda so that the vectors vec a=2 hat i- hat j+ hat k ,\ vec b= hat i+2 hat j-3 hat k\ a n d\ vec c=3 hat i+lambda hat j+5 hat k are coplanar.

Prove that hat(i) xx hat(j) = hat(k) hat(i) xx hat(j) = 1xx 1 sin 90 hat(n) = hat(n)

CENGAGE ENGLISH-VECTOR ALGEBRA-All Questions
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  2. If a ,ba n dc are three non-cop0lanar vector, non-zero vectors then ...

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  3. Prove that vectors vec u=(a l+a1l1) hat i+(a m+a1m1) hat j+(a n+a1n1)...

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  4. For any four vectors, prove that ( veca × vecb )×( vecc × vec...

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  5. If vec ba n d vec c are two-noncollinear vectors such that vec a...

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  6. If the vertices A,B,C of a triangle ABC are (1,2,3),(-1,0,0) ,(0,1,2) ...

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  7. Let vec a , vec ba n d vec c be pairwise mutually perpendicular v...

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  8. Show that | vec a| vec b+| vec b| vec a is a perpendicular to | vec a|...

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  9. If |veca|=3, |vecb|=4 and the angle between veca and vecb is 120^(@) ....

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  10. If vec a , vec b ,a n d vec c be three non-coplanar vector and p,q,...

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  11. Find | -> a| and | -> b| , if ( -> a+ -> b)dot( -> a- -> b)=8 an...

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  12. Let vec a , vec b ,a n d vec ca n d vec a^' , vec b^' , vec c ' are r...

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  13. If vec a , vec b and vec c are three non-coplanar vectors, then ( v...

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  14. Find the vector equation of the plane passing through the points havin...

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  15. If vec axx vec b= vec bxx vec c!=0,w h e r e vec a , vec b ,a n d vec...

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  16. If vec a=2 vec i+3 vec j- vec k , vec b=- vec i+2 vec j-4 vec k a n d...

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  17. If the vectors vec c , vec a=x hat i+y hat j+z hat k and vec b= hat j...

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  18. Given that vec adot vec b= vec adot vec c , vec axx vec b= vec axx ve...

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  19. If | vec a|=5,| vec a- vec b|=8 and | vec a+ vec b|=10 , then find | v...

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  20. If A ,B ,C ,D are four distinct point in space such that vec(A B) is...

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