19)
x = 4 + y 2 {\displaystyle 4+y^{2}} x = 2 y 2 {\displaystyle 2y^{2}}
∫ − 2 2 ( 4 + y 2 ) {\displaystyle \int _{-2}^{2}(4+y^{2})}
5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 25 27
x = 
