| View previous topic :: View next topic |
| Author |
Message |
Hano
Guest
|
 Posted: Mon Oct 29, 2007 5:17 pm Post subject: PS function |
 |
|
Can anyone explain this to me? My math is rusty at this point.
For which of the following fuctions is f(a+b)=f(a)+f(b)
a) f(x)=x^2
b) f(x)=x+1
c)f(x)=x^1/2
d) f(x)=2/x
e) f(x)=-3x |
|
| Back to top |
|
 |
|
|
Hano
Guest
|
| Posted: Mon Oct 29, 2007 5:24 pm Post subject: |
|
|
| I have found the answer to this!!! |
|
| Back to top |
|
|
gmatguy16
Really wants to Beat The GMAT!
Joined: 23 Aug 2007
Posts: 111
Thanks given: 1
Thanked 2 times in 2 posts
|
| Posted: Mon Oct 29, 2007 6:20 pm Post subject: |
|
|
| imo e |
|
| Back to top |
|
|
Jimat
Rising GMAT Star
Joined: 08 Oct 2007
Posts: 44
Thanks given: 0
Thanked 0 times in 0 posts
|
| Posted: Thu Nov 01, 2007 8:42 pm Post subject: |
|
|
| Ans is E |
|
| Back to top |
|
|
lawalx
Rising GMAT Star
Joined: 06 Nov 2007
Posts: 42
Thanks given: 0
Thanked 0 times in 0 posts
|
| Posted: Wed Nov 07, 2007 2:16 am Post subject: please explain |
|
|
| could someone please explain how you got the answer |
|
| Back to top |
|
|
|
|
camitava
GMAT Destroyer!
Joined: 05 Sep 2007
Posts: 633
Thanks given: 3
Thanked 26 times in 26 posts
Location: India
|
| Posted: Wed Nov 07, 2007 3:01 am Post subject: |
|
|
If we go with E, it says -
f(a)=-3a
f(b)=-3b
So f(a) + f(b) = -3(a + b)
And f(a + b) = -3(a + b)
So f(a + b) = f(a) + f(b)
Have u got it, lawalx?
_________________
Correct me If I am wrong
Regards,
Amitava |
|
| Back to top |
|
|
lawalx
Rising GMAT Star
Joined: 06 Nov 2007
Posts: 42
Thanks given: 0
Thanked 0 times in 0 posts
|
| Posted: Sat Nov 24, 2007 4:19 pm Post subject: |
|
|
| thnx ami |
|
| Back to top |
|
|
|
