举反例说明下列命题是错误的:若[tex=4.143x1.0]PHJICJ57KuqlgokJo/D6LI8pNbYJuxdSFK73IKrp3EfxvvrYEzjhIEQb3Y5v+lEx[/tex]，且[tex=2.643x1.214]CZxeYzRlnGkIw/wcCkwAVg==[/tex]，则[tex=2.429x1.0]+2Hyrq6ox90t7289xt4t0DJ1iVZVfvVKKGMEFS0BlsA=[/tex]
举一反三
- 举反例说明下列命题是错误的：若[tex=2.714x1.214]zb5xVNI+wREdAvsNRDYSVg==[/tex] ，则 [tex=2.357x1.0]6tTh6rsLh84+IwljT6w71A==[/tex] .
- 举反例说明下列命题是错误的：若 [tex=3.714x1.0]4PSfYB3Uo76vFu3b9RTnxA==[/tex]， 且 [tex=2.786x1.286]N/eE1tAJJwPeRTpYlqOl2g==[/tex]， 则 [tex=2.214x1.0]LC5CwCtBvC+Bg7cBxrSG0A==[/tex] .[br][/br]
- 举反例说明下列命题是错误的：若 [tex=2.714x1.214]gghu8bpyeWH2RVFvqU3SVA==[/tex] ，则 [tex=2.357x1.0]6tTh6rsLh84+IwljT6w71A==[/tex] 或 [tex=2.286x1.0]oRhzcxo2COa0KP5T3yC4Jw==[/tex] .
- 举反例说明下列命题是错误的.若[tex=3.357x1.0]R9q/1zIcSN2eT74WQYLXS1owfMgCJdyM73Dv43mFmqDIhUOnNb3kwMnwrmSvDBnz[/tex], 则 [tex=2.5x1.0]+HNIZcMaSzNwCe0LO7bsUmyCUUNB20KWNDES4iEPIJE=[/tex]或 [tex=2.5x1.0]sb0lI+O+hg9lDaI90Oub4OQVn7VJeioBAlxxnMs/9Jc=[/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]