import numpy as np
import matplotlib.pyplot as plt

def fun_f(x):
    return x ** 5 - 5 * x ** 4 - 30 * x ** 3 + 110 * x ** 2 + 29 * x - 105

def plot_f(xmin, xmax, xsteps):
    x = np.arange(xmin, xmax + xsteps, xsteps)
    f = np.array(fun_f(x))
    plt.plot(x, f)
    plt.xlim(-11, 11)
    plt.xticks(np.arange(xmin, xmax + xsteps, 1.0))
    plt.ylim(-1300, 1300)
    plt.grid(markevery=1)
    plt.show()

#plot_f(-10, 10, 0.1)