f ( y ) = \frac { 3 - u } { 2 + u } \text { and } u = \frac { 4 x } { – InterviewSolution

1.	f ( y ) = \frac { 3 - u } { 2 + u } \text { and } u = \frac { 4 x } { 1 - x ^ { 2 } } ; \text { find } \frac { d y } { d x }
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