find the line integral f of the vector field
F(x,y) = (1/xy^2,1/x^2y)
c: r(t) = (sqrt(t),sqrt(1+t)) from (1,sqrt(2)) to (2,sqrt(5))
i said t is from 1 to 4
then i took this integral
integrate 1/(1+t) + 1/t from 1 to 4 and i found ln10 but the result is ln(8/5)
why?