证明：[tex=12.357x2.786]BD0F+1r7R2rLMi4kd6GZuoH3QT3Wkmbx+ZpcyPZZMjCjqraM4TfiTEfvnM4kDho4Tz0y6+l+MXNr/0SFSKaFWZXudzZHBPPedHLgq2RlS3GSyMk54sLhOC2jVVzRRXljqxJDsPfSJGk/wFnW49+T6IGnypc89K3JaXx9qW+xGlw=[/tex].

证明：[tex=12.357x2.786]BD0F+1r7R2rLMi4kd6GZuoH3QT3Wkmbx+ZpcyPZZMjCjqraM4TfiTEfvnM4kDho4Tz0y6+l+MXNr/0SFSKaFWZXudzZHBPPedHLgq2RlS3GSyMk54sLhOC2jVVzRRXljqxJDsPfSJGk/wFnW49+T6IGnypc89K3JaXx9qW+xGlw=[/tex].

证明：[tex=12.357x2.786]BD0F+1r7R2rLMi4kd6GZuoH3QT3Wkmbx+ZpcyPZZMjCjqraM4TfiTEfvnM4kDho4Tz0y6+l+MXNr/0SFSKaFWZXudzZHBPPedHLgq2RlS3GSyMk54sLhOC2jVVzRRXljqxJDsPfSJGk/wFnW49+T6IGnypc89K3JaXx9qW+xGlw=[/tex].

证明：[tex=12.357x2.786]BD0F+1r7R2rLMi4kd6GZuoH3QT3Wkmbx+ZpcyPZZMjCjqraM4TfiTEfvnM4kDho4Tz0y6+l+MXNr/0SFSKaFWZXudzZHBPPedHLgq2RlS3GSyMk54sLhOC2jVVzRRXljqxJDsPfSJGk/wFnW49+T6IGnypc89K3JaXx9qW+xGlw=[/tex].

证明：[tex=12.357x2.786]BD0F+1r7R2rLMi4kd6GZuoH3QT3Wkmbx+ZpcyPZZMjCjqraM4TfiTEfvnM4kDho4Tz0y6+l+MXNr/0SFSKaFWZXudzZHBPPedHLgq2RlS3GSyMk54sLhOC2jVVzRRXljqxJDsPfSJGk/wFnW49+T6IGnypc89K3JaXx9qW+xGlw=[/tex].

证明：[tex=12.357x2.786]BD0F+1r7R2rLMi4kd6GZuoH3QT3Wkmbx+ZpcyPZZMjCjqraM4TfiTEfvnM4kDho4Tz0y6+l+MXNr/0SFSKaFWZXudzZHBPPedHLgq2RlS3GSyMk54sLhOC2jVVzRRXljqxJDsPfSJGk/wFnW49+T6IGnypc89K3JaXx9qW+xGlw=[/tex].

计算[tex=12.357x2.786]m7uKhjsF4Xm3MAcsDptPyjVnZkQbq6X1anloE76c3uWTd+OnAt53VYvMxJLUte5z[/tex]，式中[tex=19.5x3.357]bIel2T1HsedCl9pCtRzaMYFGeyGdl9gZj8pzOS6ILzMD8HOfZLFGMk+JuZ4gehbxaKGwhR+LYAKxDPs49wKxljTLK67ofAy1czjQJP9Yzd9+tAUHNT8rVHFWp+euLlyfX1MmGLV7ocU3TK0fh9stJwUBebAq1+NA6wt4YWaK976WHSEGHcAVYCsAURiIKtAu[/tex]，做出函数[tex=3.143x1.357]hxAEIxn0SaxIMYayS/UCfg==[/tex]的图像

下列变量组（）是一个闭回路。 A: {x，x，x，x，x，x} B: {x，x，x，x，x} C: {x，x，x，x，x，x} D: {x，x，x，x，x，x}

以下谓词蕴含式正确的是（）: (∀x) (A(x)→B(x))=>( ∀x)A(x)→(∀x)B(x)|(∀x) (A(x)↔B(x))=>( ∀x)A(x)↔(∀x)B(x)|(∀x)A(x)∨(∀x)B(x)=>( ∀x) (A(x)∨B(x))|(∃x) (A(x)∧B(x))=>(∃x)A(x)∧(∃x)B(x)

以下谓词蕴含式正确的是（）: (?x) (A(x)→B(x))=>( ?x)A(x)→(?x)B(x)|(?x) (A(x)?B(x))=>( ?x)A(x)?(?x)B(x)|(?x)A(x)∨(?x)B(x)=>( ?x) (A(x)∨B(x))|(?x) (A(x)∧B(x))=>(?x)A(x)∧(?x)B(x)