Hello,

to #3:

You are supposed to know the Raphson-Newton formula:

If you are looking for the solutions of T(x) = 0 where T(x) is a term in x and you have found an initial approximate value for a solution then the next approximate value is:

With your problem:

Start with

All following values equal (but that depends on the calculator you use)Code:x_0 1 x_1 0.70773205 x_2 0.677232264 x_3 0.676832564 x_4 0.676832494