Python code

import matplotlib.pyplot as plt
import numpy as np
xs = np.linspace(-1, 1, 100)
ys1 = np.exp(xs)
ys2 = np.sin(xs)
ys3 = ys1 + ys2
fs = 13
x = 0.5
blue="#007ec1"
orange="#d77a5a"
green="#6e8334"
plt.plot(xs, ys3, color=blue, label="$\\sin+\\exp$", linewidth=2)
plt.arrow(x+2.5e-2, 0, 0, np.sin(x)-0.15, color=green, head_width=0.03, head_length=0.1)
plt.arrow(x, 0, 0, np.exp(x)-0.15, color=orange, head_width=0.03, head_length=0.1)
plt.arrow(x, np.exp(x), 0, np.sin(x)-0.15, color=green, head_width=0.03, head_length=0.1)
plt.plot(xs, ys2, color=green, label="$\\sin$")
plt.plot(xs, ys1, color=orange, label="$\\exp$")
plt.plot([x], [np.sin(x)+np.exp(x)], color=blue, marker="o")
plt.plot([x], [np.sin(x)], color=green, marker="o")
plt.plot([x], [np.exp(x)], color=orange, marker="o")
plt.text(x=0.18, y=np.sin(0.5)+0.1, s="$\\sin(0.5)$", color=green, fontsize=fs)
plt.text(x=0.55, y=np.exp(0.5)-0.1, s="$\\exp(0.5)$", color=orange, fontsize=fs)
plt.text(x=-0.3, y=np.sin(0.5)+np.exp(0.5)-0.05, s="$(\\sin+\\exp)(0.5)$", color=blue, fontsize=fs+3)
plt.legend()
plt.axhline(color="black")
plt.savefig("Example for addition of functions.svg", transparent=True, bbox_inches="tight", pad_inches=0.05)