目标管理[tex=9.929x1.286]CpK3zwGVgB/VAOdJYKs/lltAt/KF1q9x533IngFKBZ4=[/tex]
举一反三
- 以4，9，1为为插值节点，求\(\sqrt x \)的lagrange的插值多项式 A: \( {2 \over {15}}(x - 9)(x - 1) + {3 \over {40}}(x - 4)(x - 1) + {1 \over {24}}(x - 4)(x - 9)\) B: \( - {2 \over {15}}(x - 9)(x - 1) + {3 \over {40}}(x - 4)(x - 1) + {1 \over {24}}(x - 4)(x - 9)\) C: \( - {2 \over {15}}(x - 9)(x - 1) + {3 \over {40}}(x - 4)(x +1) + {1 \over {24}}(x - 4)(x - 9)\) D: \( - {2 \over {15}}(x - 9)(x - 1) + {3 \over {40}}(x - 4)(x - 1) - {1 \over {24}}(x - 4)(x - 9)\)
- 设[tex=5.857x1.286]/ZR0dAzaI7eKAw6bIvA7M58pHZGw+2OYCoei6GCt4jKnUA8fDz0Dp5V6q6Qe+E/Z[/tex]，（1）求[tex=6.143x1.286]yawiFqFNRMZ/ZRG5pEYO2O+6TBLlt98eUoCA20JUzzI=[/tex]，[tex=4.929x1.286]YYoux3kBOrr0oXG6Ruhoyw==[/tex]，[tex=4.357x1.286]XVFgXYqJIcOWxMDF8fUe1A==[/tex]；（2）确定[tex=0.5x1.286]m/VGGUpsnKNFGYXigdTc/A==[/tex]，使得[tex=9.929x1.286]bjnG7nzQo1uGLijNkCPTHU/v3I7Qw+oHtHefyp+/x0OcT++gNB916y9t0e7Qwq0v[/tex]；（3）设[tex=0.571x1.286]E8TCNnEPtMKJ0mC2xxh0/Q==[/tex]满足[tex=7.0x1.286]GlBMPwREMBtBPLKotOMDrnrbhevHLzxCxckRvPv1KoQ=[/tex]，问[tex=0.571x1.286]E8TCNnEPtMKJ0mC2xxh0/Q==[/tex]至多为多少？
- 前提：∀x(P(x)→Q(x))，∃xP(x) ⇒∃xQ(x) (1)∀x(P(x) → Q(x)) 前提 (2) ∃xP(x) 前提 (3) P(c) (2), Es规则 (4)P(c)→Q(c) (1), Us规则 (5) Q(c) (3)(4), 假言推理I (6)∃xQ(x) (5), Eg规则 上述推理过程是否正确？
- 求不定积分[img=115x46]17da65382f8e1b9.png[/img]； （ ） A: x - (5*log(x + 1))/4 - (3*log(x - 3)) B: (5*log(x + 1))/4 - (3*log(x - 3)) C: x - (5*log(x + 1))/4 - (3*log(x - 3))/4 D: (5*log(x + 1))/4 - (3*log(x - 3))/4
- 掷一枚均匀骰子，直到出现的点数小于3为止，记抛掷的次数为X，则以下结果正确的是 A: P(X=2)=2/9 B: P(X≥3)=4/9 C: P(X≤3)=19/27 D: P(X=1)=2/3 E: P(X≤2)=3/4 F: P(X＝1)＝1/2 G: P(X=2)=1/4 H: P(X<3)=7/8