1a. =2x-3e^x+x²/2

1б. ∫(x^1/3-3)/x^1/2 dx = ∫(x^1/3-1/2 -3x^-1/2) dx = ∫(x^-1/6-3x^-1/2) dx =

=x^{-1/6 +1}/(-1/6+1) -3x^-1/2+1/(-1/2+1) =

=6/5 *x^5/6 -6*x^1/2

1в. ∫(5x-2)^-1/2dx = 1/5 *(5x-2)^-1/2+1 / (-1/2+1) = 0,2*(5x-2)^1/2 *2=0,4√(5x-2)