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If x^(2)y+y^(3)=2 then the value of (d^(...

If `x^(2)y+y^(3)=2` then the value of `(d^(2)y)/(dx^(2))` at the point `(1,1)` is `(-(a)/(b))` where `g.c.d(a, b)=1` then `a+b=`

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