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

($|x|<1$かつ$|y|<2$)

A = (-12, 2)
B = (-12, -2)
C = (12, -2)
D = (12, 2)
E = (-1, 6)
F = (1, 6)
G = (1, -6)
H = (-1, -6)
I = Intersect(xAxis, yAxis)
K = (1.39636363636364, 3.527272727272729)
L = (6.032727272727276, 3.545454545454547)
i = Segment(K, L)
M = (8.014545454545457, 3.509090909090911)
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", "")
J = (1, 2)
c = Circle(I, J)
O = Point(c)
P = Point(c)
Q = Point(c)
poly1, o, j_1, q, p = Polygon(O, J, Q, P)
S = (1, 3)
R = (0, 3)
u = Vector(R, S)
T = (-1, 3)
v = Vector(R, T)
U = (0, 3)
w = Vector(U, T)
V = (3, 2)
W = (3, -2)
Z = (3, 0)
z = Vector(Z, V)
a = Vector(Z, W)
A_1 = (2, 2)
B_1 = (4, 2)
b = Segment(A_1, B_1)
C_1 = (2, -2)
D_1 = (4, -2)
d = Segment(C_1, D_1)
E_1 = (1, 4)
F_1 = (0.9963636363636401, 2.6545454545454565)
e = Segment(E_1, F_1)
G_1 = (-1, 4)
H_1 = (-0.9854545454545416, 2.6545454545454565)
f = Segment(G_1, H_1)