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Is this a greatest integer function problem or a mod problem ?

for mod problems I would just take appropriate values and use. However not all times we can use only values.......we might have to use a trick here and there.

- let me know b4 i can give it a try

- ash _________________

ash
________________________
I'm crossing the bridge.........

Is this a greatest integer function problem or a mod problem ?

for mod problems I would just take appropriate values and use. However not all times we can use only values.......we might have to use a trick here and there.

- let me know b4 i can give it a try

- ash

not sure I understand the difference in your question ash. This is an absolute values problem.

Is this a greatest integer function problem or a mod problem ?

for mod problems I would just take appropriate values and use. However not all times we can use only values.......we might have to use a trick here and there.

- let me know b4 i can give it a try

- ash

not sure I understand the difference in your question ash. This is an absolute values problem.

The notation used for absolute values(modulus func) is |x|
The notation used for greatest integer value of x is [x]

Thats my understanding which I hope is correct. I didnt want to solve the problem before knowing that

Here's my attempt to solve the problem.
Let E => |x| >= |x-y| + |y|

1. given x > 0

for all values of y>x, E will not hold true.

So y>x cannot be true.
So A is sufficient.

2. given y > 0

for all x, where x<y E wont hold true because |x|<|y| always.

for x>y, E will hold true.

Sor for E to hold true, x>y must be true. So y>x is not true. B is sufficient.

MY ans is D. _________________

ash
________________________
I'm crossing the bridge.........

Is this a greatest integer function problem or a mod problem ?

for mod problems I would just take appropriate values and use. However not all times we can use only values.......we might have to use a trick here and there.

- let me know b4 i can give it a try

- ash

not sure I understand the difference in your question ash. This is an absolute values problem.

The notation used for absolute values(modulus func) is |x| The notation used for greatest integer value of x is [x]

Thats my understanding which I hope is correct. I didnt want to solve the problem before knowing that

Here's my attempt to solve the problem. Let E => |x| >= |x-y| + |y|

1. given x > 0

for all values of y>x, E will not hold true.

So y>x cannot be true. So A is sufficient.

2. given y > 0

for all x, where x<y E wont hold true because |x|<|y| always.

for x>y, E will hold true.

Sor for E to hold true, x>y must be true. So y>x is not true. B is sufficient.

MY ans is D.

I couldn't figure out what key will produce "|" symbol (absolute value symbol). Which key is it on a keyboard? Thanks in advance.

I have a question based on your explaination.Why do you presume for (2) that x<y will not hold true because |x|<|y| always?What is the relationship b/w both sets of inequality?How did you draw the // that x>y will hold in this case?Tx.

Anna

ashkg wrote:

lastochka wrote:

ashkg wrote:

Is this a greatest integer function problem or a mod problem ?

for mod problems I would just take appropriate values and use. However not all times we can use only values.......we might have to use a trick here and there.

- let me know b4 i can give it a try

- ash

not sure I understand the difference in your question ash. This is an absolute values problem.

The notation used for absolute values(modulus func) is |x| The notation used for greatest integer value of x is [x]

Thats my understanding which I hope is correct. I didnt want to solve the problem before knowing that

Here's my attempt to solve the problem. Let E => |x| >= |x-y| + |y|

1. given x > 0

for all values of y>x, E will not hold true.

So y>x cannot be true. So A is sufficient.

2. given y > 0

for all x, where x<y E wont hold true because |x|<|y| always.

for x>y, E will hold true.

Sor for E to hold true, x>y must be true. So y>x is not true. B is sufficient.

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