Using (a) fixed-point overlapping method; (b) Newton-Raphson method, find the root of the function f(x)=x^3+2*x^2+x-1, using x0=0.5. Repeat the calculation until Ea is less than Es=0.05%, and calculate the error check of the final answer.

o - PA+x+x- (a);(b) -, f(x) = et + 1.8x + 2.5, Lo = 0.5,bacs = 0.05% , - 0 0 o - PA+x+x- (a);(b) -, f(x) = et + 1.8x + 2.5, Lo = 0.5,bacs = 0.05% , - 0 0