# Arrange the following in ascending order of magnitude A) Area of the triangle with sides 2i-7j+k, 4j-3k

1.  B, A, C, D

2.  D, A< C, B

3.  D, C, B, A

4.  B, C, D, A

4

B, C, D, A

Explanation :
No Explanation available for this question

# Match the following I.  [axb bxc cxa]

1.  c, e, b,d

2.  c, e, d, b

3.  b, c, d, a

4.  b, a, c, d

4

c, e, b,d

Explanation :
No Explanation available for this question

# Observe the following lists List-I List-II a)

1.  A-1, B-2, C-3, D-4

2.  A-3, B-5, C-1, D-1

3.  A-3, B-2, C-5, D-1

4.  A-2, B-3, C-4, D-1

4

A-3, B-5, C-1, D-1

Explanation :
No Explanation available for this question

# If u=3xy-y2+(y2-2x)3/2,then uxxuyy-(uxy)2=

1.  0

2.  1

3.  -1

4.  2

4

0

Explanation :
No Explanation available for this question

# If f(x,y)=x2Tan-1(y/x)-y2 Tan-1(x/y),x≠0,y≠0 then fxy=

1.  x2+y2/ x2+y2

2.  x2-y2/ x2+y2

3.  x-y2/ x2+y2

4.  none

4

x2-y2/ x2+y2

Explanation :
No Explanation available for this question

# If z=xf(y)+yg(x) then z+xyzxy=

1.  xzx+yzy

2.  xzx-yzy

3.  xzx

4.  none

4

xzx+yzy

Explanation :
No Explanation available for this question

# A: Angle between the vector i-2j+k, 2i-j-k is π/3 R: If θ is  the angle between a, b then cosθ=a.b/|a||b|

1.  Both A and R are true and R is the correct explanation of A

2.  Both A and R are true but R is not correct explanation of A

3.  A is true R false

4.  A is false but R is true

4

Both A and R are true and R is the correct explanation of A

Explanation :
No Explanation available for this question

# If z=xΦ(x+y)+x2Ψ(x+y),then x2(zxx-2zxy+zyy)=

1.  2x(zx+zy)-2z

2.  2x(zx-zy)+2z

3.  2x(zx-zy)-2z

4.  None

4

2x(zx-zy)-2z

Explanation :
No Explanation available for this question

# If z=f(x+αy)+ (x-ay) andthen the value of k is

1.  1

2.  a

3.  a2

4.  a2xy

4

a2

Explanation :
No Explanation available for this question

1.  0

2.  1

3.  x+y+z

4.  none

4