Use the following denition: If f:RR is a function and c is
Chapter 7, Problem 7.99(choose chapter or problem)
Use the following denition: If f:RR is a function and c is a nonzero real number, the function (c f ):RR is dened by the formula (c f )(x) =c f (x) for all real numbers x. Let f:RR be a function and c a nonzero real number. If f is onto, is c f also onto? Justify your answer.
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