（2）[tex=4.571x1.357]bKCBBw27jHmi890edcBZxBxHQlHaOPM35QNHMUFBodA=[/tex]
举一反三
- 令[tex=0.786x1.0]Yn3GgEZev6SOu2r4v1WnCw==[/tex]、[tex=0.786x1.0]ri6gmnf1+J9dGqG5/1sV6A==[/tex]、和[tex=0.714x1.0]J/aA9EEo0KmJFnWWfX7LmQ==[/tex]为集合。证明[tex=4.571x1.357]jLlMI0EzFCfuQ2lgaNqJhQ==[/tex]不一定等于[tex=4.571x1.357]gn7sgz8D7Kr7zAfGjxy/Uw==[/tex]。
- 解不等式: [tex=4.571x1.357]kuoUtprnNjWxX42OeflG1A==[/tex]
- 用重量法测定铁的含量时,其称量形式为 [tex=2.5x1.214]ILKMP7xeT2T/inC84LTLpjoYtuZ9G3c1It8/AgAicspCugZ3Xv3mvQ9QbvIlkkgW[/tex], 换算因数为 :( ) 。 未知类型：{'options': ['[tex=4.071x1.357]wf5hH4dp0thkb6nyd6XVworaHcxtZ+BKQSoWHhCeluBGbfpeKcJkusXLWWG1wdJf[/tex]', '[tex=4.571x1.357]lw+SzVeL6dMEClkb/x67qidtRLmH24BogmF5dYbEPteA+ZjkTvtT5y2en4gzZRe5S3EGObWOkpPGcKsEOtRUvg==[/tex]', '[tex=4.571x1.357]omGifr9pQj2Q2RUyeP8hJ6jtDtfv+O50pXXkittiJ2WNWsmplxo27zEa0Z2A2gYkZmpM2oJOPR2U91TMBDX+fA==[/tex]', '[tex=4.571x1.357]ILKMP7xeT2T/inC84LTLps3ymqvjfz/05mI2lY/MWkKQrKdlSl+KZjDAL5Yd0jZnxZYNx9ngKttIy2BJIaHbTg==[/tex]'], 'type': 102}
- 已知[tex=2.429x1.357]F8E0Wjh3HT2EaVIjGQRtrg==[/tex]，[tex=2.786x1.357]KEvQK+UpNSQaayWeT7lkqw==[/tex]，[tex=4.571x1.357]ZYkbJRv+1mg+iNfJdQzdtA==[/tex]，求[tex=1.714x1.0]MTDV8+1I6lYIHj2qh1wj4Q==[/tex].
- 证明 [tex=3.857x1.5]Zx76vMlWldAmsWFk2498NXh0GBzr4Qbaqx/sy2IsikkR0SkEaI0jyKAnozHddxW3[/tex] 的充要条件是 [tex=4.571x1.357]c8f8pYOWcLRchWEduA0fr4EvfpJS+mDv8Qn2PbLsNOo=[/tex]