# Which topics are the following questions from?

• May 5th 2011, 11:53 PM
Nikhar
Which topics are the following questions from?
Which topics(in mathematics) are the following questions from?
Ok...we have this entrance exam which asked the following questions previous year. I don't even know which topics do these belong to.
Please tell me the following questions come under which category.
3. The value of (E – 1) is (where E is shift operator)
a) E –1 Δ b) E –1 ▽ c) E –1 δ d) None of these

29. In LPP ΔJ for all basic variables is equal to :
a) 1 b) –1 c) 0 d) None

37. If f (x) = 1/(x^2)
, then the value of divided difference f (a, b) is :

The value of Δ^10( 1-ax)(1-bx^2 )(1-cx^3 )(1-dx^4 )
is :

48. If U0 = 580, U1 = 556, U2 = 520 and U4 = 385, then the value of U3 is :
a) 400 b) 413 c) 465 d) 460

65. If U0 = 3, U1 = 12, U2 = 81, U3 = 200, U4 = 100 and U5 = 8, then the value of D 5U0
is:
a)700 b) 755 c) 756 d) None

68. The value of Δ^2O^5 is :
a) 20 b) 10 c) 30 d) 5

Thanks.

PS:- Since I didn't know the topics these questions belonged to, I posted it here. Sorry if its the wrong place.
• May 6th 2011, 03:24 AM
mr fantastic
Quote:

Originally Posted by Nikhar
Which topics(in mathematics) are the following questions from?
Ok...we have this entrance exam which asked the following questions previous year. I don't even know which topics do these belong to.
Please tell me the following questions come under which category.
3. The value of (E – 1) is (where E is shift operator)
a) E –1 Δ b) E –1 ▽ c) E –1 δ d) None of these

29. In LPP ΔJ for all basic variables is equal to :
a) 1 b) –1 c) 0 d) None

37. If f (x) = 1/(x^2)
, then the value of divided difference f (a, b) is :

The value of Δ^10( 1-ax)(1-bx^2 )(1-cx^3 )(1-dx^4 )
is :

48. If U0 = 580, U1 = 556, U2 = 520 and U4 = 385, then the value of U3 is :
a) 400 b) 413 c) 465 d) 460

65. If U0 = 3, U1 = 12, U2 = 81, U3 = 200, U4 = 100 and U5 = 8, then the value of D 5U0
is:
a)700 b) 755 c) 756 d) None

68. The value of Δ^2O^5 is :
a) 20 b) 10 c) 30 d) 5

Thanks.

PS:- Since I didn't know the topics these questions belonged to, I posted it here. Sorry if its the wrong place.

I suggest you ask whoever set the entrance exam that these questions were on.
• May 6th 2011, 03:29 AM
Nikhar
Quote:

Originally Posted by mr fantastic
I suggest you ask whoever set the entrance exam that these questions were on.

Believe me, I would have if I could have. I even googled the stuff for about an hour and a half but to no avail.
• May 6th 2011, 04:47 AM
CaptainBlack
Quote:

Originally Posted by Nikhar
Which topics(in mathematics) are the following questions from?
Ok...we have this entrance exam which asked the following questions previous year. I don't even know which topics do these belong to.
Please tell me the following questions come under which category.
3. The value of (E – 1) is (where E is shift operator)
a) E –1 Δ b) E –1 ▽ c) E –1 δ d) None of these

29. In LPP ΔJ for all basic variables is equal to :
a) 1 b) –1 c) 0 d) None

37. If f (x) = 1/(x^2)
, then the value of divided difference f (a, b) is :

The value of Δ^10( 1-ax)(1-bx^2 )(1-cx^3 )(1-dx^4 )
is :

48. If U0 = 580, U1 = 556, U2 = 520 and U4 = 385, then the value of U3 is :
a) 400 b) 413 c) 465 d) 460

65. If U0 = 3, U1 = 12, U2 = 81, U3 = 200, U4 = 100 and U5 = 8, then the value of D 5U0
is:
a)700 b) 755 c) 756 d) None

68. The value of Δ^2O^5 is :
a) 20 b) 10 c) 30 d) 5

Thanks.

PS:- Since I didn't know the topics these questions belonged to, I posted it here. Sorry if its the wrong place.

Looks like discrete or numerical analysis to me but without more context it is difficult to be precise.

LPP :- Linear Programming Problem

$\displaystyle \Delta$ :- forward difference operator

$\displaystyle \nabla$ :- backward difference operator

$\displaystyle \delta$ :- central difference operator

$\displaystyle D$ :- divided difference operator? (discrete analogue of derivative)
• May 6th 2011, 04:53 AM
Nikhar
Quote:

Originally Posted by CaptainBlack
Looks like discrete or numerical analysis to me but without more context it is difficult to be precise.

LPP :- Linear programming Problem

$\displaystyle \Delta$ :- forward difference operator

$\displaystyle \nabla$ :- backward difference operator

$\displaystyle \delta$ :- central difference operator

Thanks a lot. :)

And about more context, well, I've posted the question as it was in the question paper.

But still, thanks a ton. :D