Криволинейни интеграли

[Гост]

∫∫xy^{5}dxdy , c=[-1,3]x[1,2] (1)
c

∫∫e^{x+y}dxdy , c={(x,y):1≤x≤y, 1≤y≤2} (2)
c

∫∫eydxdy, C▲ y=1,y=0,y=x (3)
c

∫∫ (2x^{2}+3y)dxdy, C=[-1,3]x[1,2] (4)
c