plt.plot(x,indiff2(x4,28.35))

import matplotlib.lines as mlines
from matplotlib.legend_handler import HandlerLine2D
import matplotlib.pyplot as plt
#plt.style.available
plt.style.use("bmh")
%matplotlib inline
Ax=1

x3 = np.linspace(0.1,30, 1000)
x4 = np.linspace(1,60, 30)
a=b=1

def indiff1(x3,ubar):

    return ubar-x

def indiff2(x4,ubar):
    return ubar-x
plt.figure(figsize=(6,6))
plt.plot(x, ppf(x,1), color="blue")
plt.plot(x,indiff2(x4,28.35))
plt.plot(x2,ppf(x2,2),color="green")
plt.plot(x,indiff1(x3,14.14))
plt.xlabel("Coconuts",fontsize="20")
plt.ylabel("Fish", fontsize="20")
plt.xlim(0,20)
plt.ylim(0,np.sqrt(198))
plt.plot(x,indiff(x,100))

plt.tight_layout()
plt.gcf()
plt.tick_params(labelsize="20")
plt.show()