A. find the jacobian of the transformation xequals nothingu, equal nothing and sketch the region g: 1 less than or equals u less than or equals 3 comma 1 less than or equals uv less than or equals 3, in the uv-plane.

b. then use modifyingbelow integral from nothing to nothing integral from nothing to nothing with upper r f (x comma y )dx dy equals modifyingbelow integral from nothing to nothing integral from nothing to nothing with upper g f (g (u comma v )comma h (u comma v ))startabsolutevalue upper j (u comma v )endabsolutevalue du dv to transform the integral integral from 1 to 3 integral from 1 to 3 startfraction y over x endfraction dy dx into an integral over g, and evaluate both integrals.