import math

def f(x):
    if x == 2 or x == -2:
        r = 0.0
    else:
        r = (math.log(x + 5) + math.sin(x))/(x**2 - 4)
    return r

def pendent_secant(x1, x2):
    r = (f(x2) - f(x1))/(x2 - x1)
    return r

def com_creix(x, eps, arr):
    xa = x - eps
    xd = x + eps
    ra = pendent_secant(xa, x)
    rd = pendent_secant(x, xd)
    r = '{} {} {}\n{} {}'.format(xa, x, xd, round(ra, arr), round(rd, arr))
    return r