判断下面命题是否成立.如果 [tex=2.357x1.286]NmWLUlTOILHDfw7uqfi4DQ==[/tex], 且 [tex=3.143x1.286]pIXd6avCU4KEX/GUK8dSOnz85AZD7mcIyc9l265L6B4=[/tex][tex=2.214x1.286]74DEkw4aBf8CecdVHrF2uw==[/tex], 则必有 [tex=2.214x1.286]GeYQSvJjPNBsJ6lL2/GOpw==[/tex].
举一反三
- 判断下面命题是否成立.如果 [tex=3.429x1.286]wFLn5yhIi3gpbxOLnjQIr2cA5py/f1/hPthB4A2lf78=[/tex], 则必有 [tex=2.357x1.286]sf7c7AuUVGY9lixayRLrtQ==[/tex] 或 [tex=2.214x1.286]uGchNwYRZv8pbsB7Kn3lZw==[/tex].
- 判断下列命题是否为真:(1)[tex=3.643x1.357]/5abqJjwKZ1qr+6hsVFF5EBvfq3ggOFNlHMClz0h9nk=[/tex](2)[tex=2.929x1.357]rGJpyjIjJpbcoBTWxP0Jiw==[/tex](3)[tex=4.5x1.357]2wycHMoqU83MyEp17iBils58bR7YLuCTI2G9NVAdlfY=[/tex](4)[tex=5.214x1.357]CTz2gu+IIm1GgNmYMGaduCRtA41wnW4WqwRWwEhq6aA=[/tex](5)[tex=4.857x1.357]1DcE2BMMOaZhTuxR/mjgsboXxfg5ET59Dp4I/jjEDuw=[/tex](6)[tex=4.643x1.357]BSryrsQYOvTP2hTWRu6t4nAuJwlSs4L9jaq70EpB+Us=[/tex](7)若[tex=6.0x1.357]y0IZLUnBO88nR8WBZYvd7QXv5S1OMINV5cQNzPyiyAc=[/tex],则[tex=3.429x1.357]1brfPwTkVVIX4GfoMIUskA==[/tex](8)若[tex=7.643x1.357]MhLfJXZnhbXiB0x3oNtFzThV4Y1mJxe1VYr7PkJE/T6hmTD3WWp+UxbNwvUQ6DHk[/tex],则[tex=4.143x1.357]LZUA94ISo1po5HWsOVeBCjo0rMvj7uw3bGw5HiZenrI=[/tex]
- 已知[tex=5.0x1.286]nNRgYScRPw16N2lBJqtTsA==[/tex],[tex=5.0x1.286]ZIJz5gTGIgdeWAGMFdoL1A==[/tex],则[tex=6.214x1.286]wE5wtWoL9HR6uGPZrIzvHA==[/tex]成立的[tex=0.571x1.286]XubEW9+1+hkJqH7jXe5MrA==[/tex]值为 A: 1 B: 2 C: 4 D: 6 E: 8
- 已知[tex=2.357x1.286]t1pHPvJ7AlZl1FT6fv2UoA==[/tex],[tex=2.214x1.286]IkMTOy7a0RX/mqFNEPpSkw==[/tex],[tex=4.357x1.286]k4yp4oUNLNvCew5oq6PFug==[/tex],则[tex=9.286x1.286]QgeV3P3rP/xG0pN2mA4MvlsNj3Ico+I9Fs4XYsFOmk6+0cNQEh2/SlGOiUKxeQdT[/tex]的最大值是 A: 4 B: 2 C: 0 D: - 2 E: 1
- 如图,[tex=3.143x1.286]REaUoNxha/GBn3DE8cgfDA==[/tex]是边长为4的正方形,[tex=0.786x1.286]YggwMQ4w3PxfhkmL0NfgdQ==[/tex]、[tex=0.786x1.286]BlkXDnmzWHxe4M6E9LlofQ==[/tex]分别为[tex=1.571x1.286]cHJ4KDAad01mWuGaiQQpfA==[/tex]、[tex=1.571x1.286]hOo99m7YJCAnVf2cQGX8dQ==[/tex]的中点,则阴影部分的面积为[img=163x138]17e6c55620e728c.png[/img] A: 4 B: 5 C: 6 D: 7 E: 8