# -*- coding: utf-8 -*-
"""
Created on Wed Jan 15 12:09:55 2020

@author: ZUISA
"""


import matplotlib.pyplot as plt
import math
import numpy as np


def f(x):
    return -x**2+5*x+2.2



def lewy_prostokat(a,b):
    return(b-a)*f(a)

def srodkowy_prostokat(a,b):
    x0=(a+b)/2
    return(b-a)*f(x0)

def prawy_prostokat(a,b):
    return(b-a)*f(b)

def trapez(a,b):
    return ((b-a)/2)*(f(a)+f(b))


a=1
b=2
x=np.arange(-100,100,0.1)


lew=lewy_prostokat(a,b)

srod=srodkowy_prostokat(a,b)

praw=prawy_prostokat(a,b)



print(lew, srod , praw)
plt.plot(x,f(x),"--",lew,"o",srod,"o",praw,"o")
plt.show()