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kuristar
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For which of the following values of x is sqrt(1-sqrt(2-sqrt 18 Jun 2006, 07:46
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For which of the following values of x is sqrt(1-sqrt(2-sqrt x)) not a real number?

a. 1
b. 2
c. 3
d. 4
e. 5

Please explain your work.



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shobhitb
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For which of the following values of x is sqrt(1-sqrt(2-sqrt 18 Jun 2006, 07:56
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kuristar
For which of the following values of x is sqrt(1-sqrt(2-sqrt x)) not a real number?

a. 1
b. 2
c. 3
d. 4
e. 5

Please explain your work.
Show more


E

Sqrt(5) = 2.23

In this case there is a negative number under the Sqrt sign which is not a real number
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sgrover
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For which of the following values of x is sqrt(1-sqrt(2-sqrt 18 Jun 2006, 22:36
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(E) ..
Sqrt(5) > 2, which makes the expression inside sqrt -ve.
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Yurik79
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For which of the following values of x is sqrt(1-sqrt(2-sqrt 18 Jun 2006, 23:23
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shobhitb
kuristar
For which of the following values of x is sqrt(1-sqrt(2-sqrt x)) not a real number?

a. 1
b. 2
c. 3
d. 4
e. 5

Please explain your work.

E

Sqrt(5) = 2.23

In this case there is a negative number under the Sqrt sign which is not a real number
Show more

agree
In the which of the kind of question always check D and E answer choices first
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ywilfred
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For which of the following values of x is sqrt(1-sqrt(2-sqrt 18 Jun 2006, 23:41
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5 should be the answer.

The fastest way is to see sqrt2 will cancel out 2. So sqrt(5) is going to be greater than 2, and sqrt(negative number) = imaginary number.

Ans E
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Zooroopa
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For which of the following values of x is sqrt(1-sqrt(2-sqrt 19 Jun 2006, 00:21
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Agree with E.
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Futuristic
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For which of the following values of x is sqrt(1-sqrt(2-sqrt 30 Jun 2006, 11:51
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Interestingly for all values of x < 1 , the expression is an imaginary number as well :)
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ps_dahiya
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For which of the following values of x is sqrt(1-sqrt(2-sqrt 30 Jun 2006, 13:12
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Futuristic
Interestingly for all values of x < 1 , the expression is an imaginary number as well :)
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Not x <1 but for all values x < 0

yes this is E.
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shampoo
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For which of the following values of x is sqrt(1-sqrt(2-sqrt 30 Jun 2006, 13:24
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ha, had to look at the definition of a real number. Its E, can't take a sqrt of a negative #.



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Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
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