mathematics
posted by Donna .
If 3xy^3  4x = 10y^2, find y ' (x)
a) (4 + 3y^2)/(9xy^2 + 20y)
b) (4  3y^2)/(9xy^2  20y)
c) (3 + 4y^2)/(20xy^2 + 9y)
d) (3  4y^2)/(20xy^2  9y)
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