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Sets, Relations and Functions
0
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Which of the following is not a function in R, the set of real numbers ?
(A) $y=x^2$
(B) $y=\sqrt x$
(C) $y=x^3$
(D) $y=x$
jeemain
math
class11
ch2
relations-and-functions
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asked
May 21, 2013
by
rvidyagovindarajan_1
edited
Mar 31, 2016
by
balaji.thirumalai
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1 Answer
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$y=\sqrt x$ is not a function in R because negative numbers
do not have squareroot in R
answered
May 21, 2013
by
rvidyagovindarajan_1
edited
May 18, 2014
by
rohanmaheshwari0831_1
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