From i2=−1 you cannot conclude that i=−1−−−√ , just like from (−2)2=4 you cannot conclude that −2=4√ . The symbol a√ is by definition the positive square root of a and is only defined for a≥0 .
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Top IT Industry Frequency asked interview questions with answers on C programming language Plus Plus programming language, Embedded system and Java programming language.
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