It is currently 06 Jul 2020, 17:59
My Tests

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Assume the function f(x) is defined as follows: f(x) = (x

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
1 KUDOS received
Intern
Intern
Joined: 05 Jan 2016
Posts: 28
Followers: 0

Kudos [?]: 18 [1] , given: 14

Assume the function f(x) is defined as follows: f(x) = (x [#permalink] New post 05 Jun 2016, 16:01
1
This post received
KUDOS
00:00

Question Stats:

27% (00:34) correct 72% (00:29) wrong based on 37 sessions
Assume the function f(x) is defined as follows: \(f(x) = (x-4)^2 + \sqrt{(x+3)} + \frac{5}{x+2}\). For Which of the following values of x is f(x) defined?

Indicate all such values.

A. -5
B. -4
C. -3
D. -2
E. -1

[Reveal] Spoiler:
C, E

Last edited by GreenlightTestPrep on 06 Jan 2019, 11:17, edited 3 times in total.
Renamed the topic and edited the question.
Founder
Founder
User avatar
Joined: 18 Apr 2015
Posts: 11958
Followers: 252

Kudos [?]: 2983 [0], given: 11204

CAT Tests
Re: Please HELPP [#permalink] New post 06 Jun 2016, 01:49
Expert's post
GREHelp what is the source of the question ???
_________________

Need Practice? 20 Free GRE Quant Tests available for free with 20 Kudos
GRE Prep Club Members of the Month: Each member of the month will get three months free access of GRE Prep Club tests.

1 KUDOS received
Intern
Intern
Joined: 05 Jan 2016
Posts: 28
Followers: 0

Kudos [?]: 18 [1] , given: 14

Re: Please HELPP [#permalink] New post 06 Jun 2016, 13:15
1
This post received
KUDOS
Sorry the source of the question is Manhattan Prep Algebra Book.
1 KUDOS received
Intern
Intern
Joined: 05 Jan 2016
Posts: 28
Followers: 0

Kudos [?]: 18 [1] , given: 14

Re: Please HELPP [#permalink] New post 10 Jun 2016, 11:21
1
This post received
KUDOS
Can anyone provide any guidance to help answer this?
6 KUDOS received
Senior Manager
Senior Manager
Joined: 20 May 2014
Posts: 283
Followers: 23

Kudos [?]: 61 [6] , given: 220

CAT Tests
Re: Assume the function f(x) is defined as follows: f(x) = (x [#permalink] New post 10 Jun 2016, 13:55
6
This post received
KUDOS
GREhelp wrote:
Assume the function f(x) is defined as follows: \(f(x) = (x-4)^2 + \sqrt{(x+3)} + \frac{5}{x+2}\). For Which of the following values of x is f(x) defined?

Indicate all such values.

A. -5
B. -4
C. -3
D. -2
E. -1

The answer is C and E. I could only select one in the official answer choice box.


You should know two properties:

1. The square root from a negative number is not defined, thus x+3 must be more than or equal to 0: \(x+3 \geq 0\) --> \(x \geq-3\). Eliminate options A, and B.

2. Division by 0 is not allowed, thus x+2 cannot be 0, which means that x cannot be -2. Eliminate D.

Answers C and E.

Hope it's clear.
1 KUDOS received
Intern
Intern
Joined: 12 Jul 2017
Posts: 9
Followers: 0

Kudos [?]: 6 [1] , given: 2

Re: Assume the function f(x) is defined as follows: f(x) = (x [#permalink] New post 24 Jul 2017, 07:20
1
This post received
KUDOS
Great, thanks
1 KUDOS received
Intern
Intern
Joined: 02 Sep 2019
Posts: 43
Concentration: Finance
GPA: 3.14
Followers: 0

Kudos [?]: 19 [1] , given: 14

CAT Tests
Re: Assume the function f(x) is defined as follows: f(x) = (x [#permalink] New post 28 Jun 2020, 20:56
1
This post received
KUDOS
No need any calculation here.
the question is asking what is the possible value of x?
and from the function notice that we have root and fraction.
There is no value for negative roots and dividing by zero is undefined.
hence eliminate all answers that may contradict the rules above.
we left with C and E.
Re: Assume the function f(x) is defined as follows: f(x) = (x   [#permalink] 28 Jun 2020, 20:56
Display posts from previous: Sort by

Assume the function f(x) is defined as follows: f(x) = (x

  Question banks Downloads My Bookmarks Reviews Important topics  


GRE Prep Club Forum Home| About| Terms and Conditions and Privacy Policy| GRE Prep Club Rules| Contact

Powered by phpBB © phpBB Group

Kindly note that the GRE® test is a registered trademark of the Educational Testing Service®, and this site has neither been reviewed nor endorsed by ETS®.