let f be the function whose graph goes through the point (3,6) whose derivatie is given by f'(x) =(1+e^x)/(x^2)

Question

1. write an equation of a line tangent to the graph at x=3 and use it to approximate f(3.1)
--- I GOT : y= (1+e^3)/(9) (.1) +6

i don't know if it is right

i don't know how to do the second part thank you!

2. use integral [ from 3 to 3.1 to evaluate f(3.1)