(3x-1)^(1/3)
y'=1/3(3*(3x-1)^(-2/3)=(3x-1)^(-2/3)
y'(3)=8^(-2/3)=1/4
y(3)=8^1/3=2
2=1/4*3+c
c=2-3/4=5/4
y=1/4x+5/4
(3x-1)^(1/3)
y'=1/3(3*(3x-1)^(-2/3)=(3x-1)^(-2/3)
y'(3)=8^(-2/3)=1/4
y(3)=8^1/3=2
2=1/4*3+c
c=2-3/4=5/4
y=1/4x+5/4