Solución

1/21/2y2+1y2+1ydxdy=12x21x21ydydx\int_{-1/2}^{1/2}\int_{-\sqrt{y^2+1}}^{\sqrt{y^2+1}}ydxdy = \int_{1}^2\int_{-\sqrt{x^2-1}}^{\sqrt{x^2-1}}ydydx