Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Apr 2308:00 PM PDT
-09:00 PM PDT
Video explanations + diagnosis of 10 weakest areas + 150+ short videos + study plan!
Apr 2301:30 AM EDT
-02:30 AM EDT
Struggling with GMAT Verbal as a non-native speaker? Harsh improved his score from 595 to 695 in just 45 days—and scored a 99 %ile in Verbal (V88)! Learn how smart strategy, clarity, and guided prep helped him gain 100 points.
Apr 2512:30 AM EDT
-01:30 AM EDT
At one point, she believed GMAT wasn’t for her. After scoring 595, self-doubt crept in and she questioned her potential. But instead of quitting, she made the right strategic changes. The result? A remarkable comeback to 695. Check out how Saakshi did it.
Apr 2610:00 AM EDT
-11:00 AM EDT
The Target Test Prep course represents a quantum leap forward in GMAT preparation, a radical reinterpretation of the way that students should study. Try before you buy with a 5-day, full-access trial of the course for FREE!
Apr 2711:00 AM EDT
-12:00 PM EDT
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors
Apr 2808:00 AM PDT
-11:00 AM PDT
Whether you are just beginning your MBA journey or fine-tuning your path to a 700+ score, GMAT Day is designed to give you a competitive edge.
D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
35%
(medium)
Question Stats:
57% (00:53) correct
43%
(00:51)
wrong
based on 810
sessions
History
Date
Time
Result
Not Attempted Yet
If \(\sqrt{x}\) = x, then which of the following must be true?
A. x is positive
B. x=1
C. x^2>x
D. x is non-negative
E. None of the above
A. x is positive
B. x=1
C. x^2>x
D. x is non-negative
E. None of the above
Updated on: 14 May 2023, 02:34
Originally posted by BrushMyQuant on 22 Mar 2013, 01:34.
Last edited by BrushMyQuant on 14 May 2023, 02:34, edited 1 time in total.
Last edited by BrushMyQuant on 14 May 2023, 02:34, edited 1 time in total.
Kudos
Bookmarks
Given that \(\sqrt{x}\)=x and we need to find which of the following must be true?
\(\sqrt{x}\)=x
Squaring both the sides we get:
x = \(x^2\)
\(x^2\) - x= 0
x(x-1)=0
=> x=0 or x=1
So, Answer will be D
Hope it helps!
Watch the following video to learn the Basics of Roots
\(\sqrt{x}\)=x
Squaring both the sides we get:
x = \(x^2\)
\(x^2\) - x= 0
x(x-1)=0
=> x=0 or x=1
So, Answer will be D
Hope it helps!
Watch the following video to learn the Basics of Roots
General Discussion
22 Mar 2013, 03:03
Kudos
Bookmarks
If \(\sqrt{x}= x\) , then which of the following must be true?
A. x is positive
B. x=1
C. x^2>x
D. x is non-negative
E. None of the above
We have that x is equal to the square root of some number (\(\sqrt{x}\)). Now, we know that the square root function cannot give negative result (\(\sqrt{{some \ expression}}\geq{0}\)), thus LHS (\(\sqrt{x}\)) is more than or equal to zero, which implies tha RHS (x) is also more than or equal to zero. Hence we have that \(x\geq{0}\).
Answer: D.
Or simply be solving: \(\sqrt{x}= x\) --> \(x=x^2\) --> \(x(x-1)=0\) --> \(x=0\) or \(x=1\).
Answer: D.
A. x is positive
B. x=1
C. x^2>x
D. x is non-negative
E. None of the above
We have that x is equal to the square root of some number (\(\sqrt{x}\)). Now, we know that the square root function cannot give negative result (\(\sqrt{{some \ expression}}\geq{0}\)), thus LHS (\(\sqrt{x}\)) is more than or equal to zero, which implies tha RHS (x) is also more than or equal to zero. Hence we have that \(x\geq{0}\).
Answer: D.
Or simply be solving: \(\sqrt{x}= x\) --> \(x=x^2\) --> \(x(x-1)=0\) --> \(x=0\) or \(x=1\).
Answer: D.
