sashi agreed that
A={x : x2 - 9 = 0 :x € R} an empty set ? do you agree her? justify your answer
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Answer:
Correct option is
A
0
The given function x
2
+4=0 cannot be satisfied by any natural number as the L.H.S is always positive while the R.H.S is zero.
Thus the given set B is an empty set.
Also, the number of elements in it is 0.
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