y' = 1x^(1/3) + 2(1/2)*x^(-1/2) = x^(1/3) + x^(-1/2)
y' = 7(6/7)x^(6/7-1) + 6(3/6) x^(3/6-1) + 5(4/5)x^(4/5-1) + 3(2/3)x^(2/3-1) + 2= 6x^(-1/7) + 3x^(-1/2) + 4x^(-1/5) + 2x^(-1/3)
y' = 2x + 1/3 x^(-1/3)
y' = 1x^(1/3) + 2(1/2)*x^(-1/2) = x^(1/3) + x^(-1/2)
y' = 7(6/7)x^(6/7-1) + 6(3/6) x^(3/6-1) + 5(4/5)x^(4/5-1) + 3(2/3)x^(2/3-1) + 2
= 6x^(-1/7) + 3x^(-1/2) + 4x^(-1/5) + 2x^(-1/3)
y' = 2x + 1/3 x^(-1/3)