Consider / x - xy + y° dA where R is the region given by x? – xy + y²

Extracted text: Consider / x - xy + y° dA where R is the region given by x? – xy + y² < 6.="" r="" after="" using="" the="" transformation="" x="v2u" –="" v="" v,="" y="v2u" +="" vu,="" the="" integral="" in="" polar="" coordinates="" becomes="" select="" one="" or="" more:="" 2x="" v3="" *="" dr="" d0="" o="" a.="" v3="" o="" b.="" none="" of="" the="" other="" options="" v3="" 2="" dr="" d0="" 8="" v3="" 8="" o="" d.="" v2="" v3="" 2="" dr="" d0="" v3="" *="" dr="" do="" 8="">