15/51-15‖2∠5∪5∩4∈5⊙6∑7
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15/51-15‖2∠5∪5∩4∈5⊙6∑7
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再问: 78858582.555848
再问: 78858582.555848
15/51-15‖2∠5∪5∩4∈5⊙6∑7
简便方法急⊙﹏⊙b汗 8分之5×(5÷(6分之5-4分之3) 3分之7-(8分之5-8分之5÷16分之15)
15/2×5/9+4/7+11/5×6/5
3分之2u十4分之3U =2分之1 5分之4u十6分之5∪=15分之7
用卡诺图化简函数F=∑m(1,2,3,4,5,7,9,15)
全集U={1,2,3,4,5,6,7,8},已知CuA∪CuB={1,2,3,5,6,7,8,},CuA∩CuB={3,
(7 5/18-6 11/15)/【2 14/15+(4-2 14/15)/1.35=?
9/2×5/3 7/6×9/7 8/5×15/4 20/9×21/5
设全集U={x∈N+|x≤8},若A∩(CuB)={2,8},(CuA)∪(CuB)={1,2,3,4,5,6,7,8}
找规律并证明5^2-3^2=8×2 9^2-7^2=8×4 15^2-3^6=8×27 11^2-5^2=8×12 15
≮≯≡∫∮∝∞∈∩∪∏∑∨∧⊥‖∠⌒⊙≌∽≤≥≠∷的汉语读音都怎读?
用卡诺图化简函数 F=∑m(0,2,5,6,7,8,9,10,11,14,15)