Exercises 38 and 39 use the following definition: If is a function and c is a nonzero real number, the function is defined by the formula for every real number x.
Let be a function and c a nonzero real number. If f is onto, is also onto? Justify your answer.
If is an onto function and is a nonzero real number, then whether is also onto function or not.
The function is onto function and is a nonzero real number.
Function is defined by the formula for all real numbers .
A function is said to be onto if, for every , there exists such that .
Consider . Since the function is onto from , there exists a real number such that
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