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CBSE Class 12-science Answered

Explain signum & into functions

 

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Asked by yadav.ml | 25 Apr, 2014, 11:11: AM
answered-by-expert Expert Answer
Signum function is defined as :
 
f open parentheses x close parentheses equals open curly brackets table row cell minus 1 space space space space space space space x less than 0 end cell row cell 0 space space space space space space space space x equals 0 end cell row cell 1 space space space space space space x greater than 0 end cell end table close
A function f:P→Q is an into function, if there exists element in co-domain set, which has no pre-image in the domain set “P”.

 

Answered by | 25 Apr, 2014, 02:59: PM
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