#!/bin/sh
ifinstalled python && python -iq -c "print('Welcome to the Calculator')
from numpy import *
import sys
import matplotlib.pyplot as plt
sys.ps1='❯'

def plot(a, b, f):
    x = linspace(a, b, 1000)
    y = eval(f)
    plt.plot(x, y)
    plt.show()
"