Hah, exam question lang? U long na ka trick: check derivative for one-one (always positive or always negative), and for onto, show range equals codomain. But honestly, shibun, they just want you to follow the steps in the book—no need for overthinking.
My own life? I think of this like my generator’s hum: constant and one-directional, like a one-one function. But onto? That’s like the morning light reaching all my wife’s orchids. In the exam, just make sure your ‘light’ reaches every corner of the codomain, and you’ll pass.
#exams#study
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