Could you please help me understand how you found the lower limit i.e x should be greater than 4/9. I did refer to the previous post as well.But I am not clear with it.
Thanking you in advance.

Could you please help me understand how you got the lower limit as greater than 4/9. I did try going through the previous post on this topic.Still I need more clarity on this.

It is rt(4+rt(4-something)). Now this ‘something’ is within a rt sign, so cannot be negative by definition. Hence, it must be rt(4+rt(less than 4)) which is less than rt(4+rt4).

What about x<-2 in the example from CAT 2005?

Never mind just read the square root function post.

Since it is within a square root sign, it is treated as positive only ðŸ™‚

regards

J

Could you please help me understand how you found the lower limit i.e x should be greater than 4/9. I did refer to the previous post as well.But I am not clear with it.

Thanking you in advance.

Could you please help me understand how you got the lower limit as greater than 4/9. I did try going through the previous post on this topic.Still I need more clarity on this.

1/[2+1/(4+something positive)]

= 1/[2 + (less than 1/4)]

= 1/[less than 2.25]

= (greater than 1/2.25)

= (> 4/9)

regards

J

Could you please help me understand how you found the lower limit i.e x should be less than root(4+root(4)). In cat 2005 qstion?

It is rt(4+rt(4-something)). Now this ‘something’ is within a rt sign, so cannot be negative by definition. Hence, it must be rt(4+rt(less than 4)) which is less than rt(4+rt4).

regards

J