import numpy as np
def f12(x, y):
    return float(8*x*x+8*x+6*y-14)
def f21(x, y):
    return float(13*x*x-7*y-14)
def maxfunction(x, y):
    return float(max(abs(f12(x,y)), abs(f21(x,y))))
x1=float(0.01)
x2=float(-0.01)
delta = round(float(maxfunction(x1, x2)),3)
 
for x in range(-100, 101):
    for y in range(-200, 202, 2):
        if delta > maxfunction(x / float(100), y / float(100)):
            delta = round(float(maxfunction(x / float(100), y / float(100))),3)
            x1 =float(x / float(100))
            x2 =float(y / float(100))
print("delta = ", delta, " x1 = " , x1, "x2 = ", x2)

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