<style type="text/css"> .input_prompt, .input_area, .output_prompt { display:none !important; } .reveal h1, .reveal h2 { font-family:times } </style>

2+2

4

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from ipywidgets import StaticInteract, RangeWidget, RadioWidget
%matplotlib inline
from matplotlib import pyplot as plt
import numpy as np
def  quadr_func(a,b):
    fig = plt.figure()
    x = np.linspace(-2,2,20)
    y = a*x**2+b*x
    ax = fig.add_subplot(111)
    ax.plot(x, y)
    return fig

StaticInteract(quadr_func, a=RangeWidget(-1,1,0.55), 
               b=RangeWidget(-1,1, 0.55))

a:
b: