I. 10.11 Flux of the Vector Field

Calculate the flow of the vector field \ (\ vec {a} = (x-y) \ vec {\ iMath}+\) \ ((2 x+y) \ vec {\ jmath}+\ left (x^{2} +2 z+4 \ right) \ veca {k} \ quadad \) Through a closed surface limited by surfaces \ (s_ {1}, s_ {2} \) directly and according to the Gaussaostograd formula: \ [s_ {1}: x^{2}+y^{2} = z+2, \ quad S_ {2}: z = 0 \ text {. } \]