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Mathematics 11 Online
OpenStudy (anonymous):

find concavity and intervals of increase and decrease of y=(1-x)/1+x) I'm really confused

OpenStudy (perl):

interval of increase are x values for which y ' > 0 , interval of decrease are x values for which y ' < 0 concave up is when y ' ' > 0 , concave down is y ' ' < 0

OpenStudy (anonymous):

Welcome to OpenStudy, good job on your first question! :)

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