Choose the correct answer for the following function: f(x, y) = cos(2x²y³) Select one: None of the Others O=<-4x sin(2x²y³), 6y² sin(2x²y³) > O =<-4xy³ sin(2x²y³), 6x²y² sin(2x²y³) > 0 < far fy >=<-4xy³ cos(2x²y³), -6x²y² cos(2x²y³) > 0 < fa, fy >=< 8ry³ sin(2x²y³), 3x²y² sin(2x²y³) >

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