GRE Prep 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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2509
Given Kudos: 1058
GPA: 3.39
If f(x) = 1/(x+2) +(x-1)^2, what is f(-1)?
[#permalink]
09 Feb 2021, 09:58
09 Feb 2021, 09:58
1
Expert Reply
00:00
Question Stats:
70% (00:36) correct
29% (00:27) wrong based on 34 sessions
Hide Show timer Statistics
If \(f(x) = \frac{1}{x+2} +(x-1)^2\), what is \(f(-1)\)?
A. 1
B. 3
C. 5
D. 7
E. 9
A. 1
B. 3
C. 5
D. 7
E. 9
Retired Moderator
Joined: 16 Apr 2020
Status:Founder & Quant Trainer
Affiliations: Prepster Education
Posts: 1546
Given Kudos: 172
Location: India
WE:Education (Education)
Re: If f(x) = 1/(x+2) +(x-1)^2, what is f(-1)?
[#permalink]
09 Feb 2021, 22:31
09 Feb 2021, 22:31
1
GeminiHeat wrote:
If \(f(x) = \frac{1}{x+2} +(x-1)^2\), what is \(f(-1)\)?
A. 1
B. 3
C. 5
D. 7
E. 9
A. 1
B. 3
C. 5
D. 7
E. 9
Simply plug x = -1 in f(x) to get 5
Hence, option C
Moderator
Joined: 02 Jan 2020
Status:GRE Quant Tutor
Posts: 1141
Given Kudos: 9
Location: India
Concentration: General Management
Schools: XLRI Jamshedpur, India - Class of 2014
GMAT 1: 700 Q51 V31
GPA: 2.8
WE:Engineering (Computer Software)
Re: If f(x) = 1/(x+2) +(x-1)^2, what is f(-1)?
[#permalink]
18 Jan 2022, 10:07
18 Jan 2022, 10:07
1
Given that \(f(x) = \frac{1}{x+2} +(x-1)^2\) and we need to find the value of \(f(-1)\)
To find f(-1) we need to compare f(-1) with f(x) and see what is inside the bracket of f()
=> x=-1
=> To find the value of f(-1) we need to replace x with -1 in \(f(x) = \frac{1}{x+2} +(x-1)^2\)
=> \(f(-1) = \frac{1}{-1+2} +(-1-1)^2\) = \(\frac{1}{1} +(-2)^2\) = 1 + 4 = 5
So, Answer will be C
Hope it helps!
Watch the following video to learn the Basics of Functions and Custom Characters
To find f(-1) we need to compare f(-1) with f(x) and see what is inside the bracket of f()
=> x=-1
=> To find the value of f(-1) we need to replace x with -1 in \(f(x) = \frac{1}{x+2} +(x-1)^2\)
=> \(f(-1) = \frac{1}{-1+2} +(-1-1)^2\) = \(\frac{1}{1} +(-2)^2\) = 1 + 4 = 5
So, Answer will be C
Hope it helps!
Watch the following video to learn the Basics of Functions and Custom Characters
