The value of lambda for which the vector...

The value of `lambda` for which the vectors `veca= hati+ 3 hat j- hat k` and `vec b= 2hati+6 hat j+lambdak` are parallel is

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-3

-2

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The value of lamda for which the vectors vec(a) = hat(i) + 3hat(j) - hat(k) and hat(b) = 2hat(i) + 6hat(j) + lamda hat(k) are parallel is-

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if vec a = 2 hat i- 3 hat j+hat k and vec b = hat i+2 hat j- 3hat k then vec aXvec b is

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A vector of magnitude sqrt(2) coplanar with the vector vec a= hat i+ hat j+2 hat k and vec b= hat i+2 hat j+ hat k , and perpendicular to the vector vec c= hat i+ hat j+ hat k , is a. - hat j+ hat k b. hat i- hat k c. hat i- hat j d. hat i- hat j

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UNITED BOOK HOUSE-HIGHER SECONDARY QUESTION 2019-EXERCISE

CHOOSE the correct answer from the following alternative : the value o...
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CHOOSE the correct answer from the following alternative :if f(x)=-f(-...
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The value of lambda for which the vectors veca= hati+ 3 hat j- hat k a...
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CHOOSE the correct answer from the following alternative : the domain ...
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CHOOSE the correct answer from the following alternative :if y=tan ^(-...
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1. (a) ANSWER any one question: 1. solve : 2sin ^(-1) x=cos^(-1)x.
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ANSWER any one question: 2. let A={1,2,3,}. Define a relation (on A) ...
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(b) answer any one question:1. A= [[8,0],[4,-2]] and B=[[2,-2],[-5,1]]...
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answer any one question : 2. if [[2,3],[4,5]]=[[x,3],[2x,5]] , find th...
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(c)answer any three questions: 1. if y=sin ^(-1) ((2x)/(1+x^2)) , find...
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answer any three questions :2. f(x)=5 -|x-1|: find the maximum value o...
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answer any three questions: 3.if x>0, then show that log(1+x) > x/(1+x...
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Find the differential equation of all circles which touch the x-axis a...
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answer any three questions:5. if f(2)=4,f'(2)=4, then evaluate lim (x ...
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answer any three questions:6. evaluate : int1^2 (xdx)/((x+1)(x+2))
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show that A(2,3,-4),B (1,-2,3) and C(3,8,-11) are collinear.
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if vec a= 5 hat i -hat j -3 hat k and vec b=hat i+3 hat j - 5 hat k , ...
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(e)ANSWER ANY one question : 1. if P(A) =a and P(B)=b, then show that ...
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if a and b are any two constants, then prove that Var (aX+b)=a^2Var(X)...
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if tan ^(-1) x+tan ^(-1)y+tan ^(-1) z=pi/2 and x+y+z= sqrt3 , then sho...
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