import numpy as np
import matplotlib.pyplot as plt

lim = 8
size = 5.6
fig, ax = plt.subplots(figsize=(size, size))
xs = np.linspace(-lim, lim, 1000)
ax.plot(xs, np.sinh(xs), label="y = sinh(x)",
        color="#b30000", linestyle="-", linewidth=2)
ax.plot(xs, np.cosh(xs), label="y = cosh(x)",
        color="#00b300", linestyle="--", linewidth=2)
ax.plot(xs, np.tanh(xs), label="y = tanh(x)",
        color="#0000b3", linestyle=":", linewidth=2)
ax.set_xlim(-lim, lim)
ax.set_ylim(-lim, lim)
ax.set_xticks([-1, 0, 1])
ax.set_yticks([-1, 0, 1])
ax.set_xlabel("x")
ax.set_ylabel("y")
ax.grid("on")
ax.legend(loc="lower right")
fig.tight_layout()
fig.savefig("sinh_cosh_tanh.svg", transparent=True)