S= ∫ ^(1)_(0)(2-x)dx + ∫ ^(2)_(1)sqrt(x)dx=
=( 2x-(x^2/2))|^(1)_(0) + (x^(3/2)/(3/2))|^(2)_(1)=
=2*1-(1/2) + (2/3)*(2^(3/2)-1)=(3/2)+(2/3)*sqrt(2^3)-(2/3)=
=(5/6) + 4sqrt(2)/3
102
S= ∫ ^(1)_(-1)(1-x^2)=2 ∫ ^(1)_(0)=(1-x^2)dx=
=2*(x-(x^3/3))|^(1)_(0) = 2* (1-(1/3))=4/3