区间[0,1]的各种函数图像（不定更）

对称轴x=0.5凹

from matplotlib import pyplot as mp

def quadratic(x, n=2):
    return (2 * x - 1) ** n

w = [i / 400 for i in range(401)]
mp.figure(figsize=(5, 5))
mp.scatter([0, .5, 1], [1, 0, 1], s=75, color='b', alpha=.3)
mp.plot(w, [quadratic(i) for i in w], color='b', alpha=.2)
mp.plot(w, [quadratic(i, 4) for i in w], color='b', alpha=.2)
mp.plot(w, [quadratic(i, 8) for i in w], color='b', alpha=.2)
mp.plot(w, [quadratic(i, 16) for i in w], color='b', alpha=.2)
mp.show()

对称轴x=0.5凸

from matplotlib import pyplot as mp

def quadratic(x, n=2):
    return 1 - (2 * x - 1) ** n

w = [i / 400 for i in range(401)]
mp.figure(figsize=(5,