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[" 1.If "x+y=t-(1)/(t),x^(2)+y^(2)=t^(2)...

[" 1.If "x+y=t-(1)/(t),x^(2)+y^(2)=t^(2)+(1)/(t^(2))," what is "(dy)/(dx)" cqual to "?],[[" (a) "(1)/(x)," (b) "-(1)/(x)," (c) "(1)/(x^(2))," (d) "-(1)/(x^(2))]]

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