必要条件と十分条件１
Date: 3 １月 2014

図を見て，どの条件が必要条件でどの条件が十分条件かを調べましょう．

|y|<2

|x|<1

x^2+y^2<5

$x^2+y^2<5$

十分・必要条件を表示

ならば

($|x|<1$または$|y|<2$)

A = (-12, 2)
B = (-12, -2)
C = (12, -2)
D = (12, 2)
多角形1, a, b, c, d = Polygon(A, B, C, D)
E = (-1, 6)
F = (1, 6)
G = (1, -6)
H = (-1, -6)
多角形2, e, f, g, h = Polygon(E, F, G, H)
I = Intersect(xAxis, yAxis)
J = Intersect(d, f)
k = Circle(I, J)
K = (1.39636363636364, 3.527272727272729)
L = (4.269090909090913, 3.527272727272729)
i = Segment(K, L)
M = (6.032727272727276, 3.490909090909093)
N = (10.850909090909093, 3.490909090909093)
j = Segment(M, N)
modej = 0
テキスト5 = If(modej ≟ 1, "十分条件", "")
テキスト6 = If(modej ≟ 1, "必要条件", "")