?from math import *

def f(t,x):
    return x

a = 0; b = 1
n = 200; h = (b-a)/float(n)

t = 0; x = 1

for k in range(1,n+1):
    x_new = x + h*f(t, x)

    x = x_new
    t = t + h
    print("t =", t, "  x = ", x)