import numpy as np
import matplotlib.pyplot as plt

a=float(input('a='))
b=float(input('b='))
c=float(input('c='))
dx=float(input('dx='))
x=np.arange(1,2*np.pi,dx)
fig,axs = plt.subplots(2,2,figsize=(12,7))
plt.subplots_adjust(hspace=0.4)

axs[0,0].plot(x,np.sqrt((1.2*a+c*np.log(x))/2/b*np.exp(x)),'o-r')
axs[0,1].plot(x,np.sin(x)+0.1*b**2+c*np.exp(np.cos(x)),'--g')
axs[1,0].plot(x,a*(b+c)/(2*x**2+x+0.6)*np.sin(x)+np.exp(a),'<m')
axs[1,1].plot(x,b/(a*x**2+3)+np.log(b)*np.sin(x**3)+c,'-.')

axs[0, 0].set_title("Title 1")
axs[0, 1].set_title("Title 2")
axs[1, 0].set_title("Title 3")
axs[1, 1].set_title("Title 4")
axs[0,0].set_xlabel('x')
axs[0,0].set_ylabel('y', color='red')
axs[0,1].set_xlabel('x')
axs[0,1].set_ylabel('y', color='green')
axs[1,0].set_xlabel('x')
axs[1,0].set_ylabel('y', color='purple')
axs[1,1].set_xlabel('x')
axs[1,1].set_ylabel('y', color='blue')
plt.show()