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Mathematics 18 Online
OpenStudy (anonymous):

contrapositive of s-->u

OpenStudy (anonymous):

Please help, i forgot.

OpenStudy (helder_edwin):

i am not sure but i think it is \[ \large s\to u\quad\Leftrightarrow\quad\neg u\to\neg s \]

OpenStudy (helder_edwin):

the one on the right is the contrapositive

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