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Formulas or tehniques to find domain,range.And how to find one one&onto and formulas to find number of one onto functions

Formulas or tehniques to find domain,range.And how to find one one&onto and formulas to find number of one onto functions

Grade:12th pass

2 Answers

Arun
25750 Points
5 years ago
Dear student
 
Please ask a question.
 
I wcan help you by making that question undestand.
 
Regards
Arun (askIITians foru expert)
Dharun J
35 Points
5 years ago
Dont panic! if u were asked to find domain first see for what values of x (variable)tbe functin is valid
For eg inside a square root or a nth root we should not have negative values so equate the term inside root to be greater than zero.
And for log base should not be negatI've one or 0
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If a rational function equate to y and see for what values it is real y .  if u have any qn to me ill clearly exp to u ☺

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