求[tex=5.786x1.357]acAqx0j3Hx1MBUTWN2pKEbIdJDdtS9+yIWrVzpIU1q4=[/tex]的导数。
举一反三
- 求函数[tex=5.786x1.357]cdt6rBObuoY1bECKbQgdPA==[/tex]的导数。
- 求函数[tex=5.786x1.357]6fuVUfx+Z1u0XbE95z+yhA==[/tex]的偏导数。
- 求[tex=7.214x1.286]y9XPuMf4nwAPJAGY3m3bkwXsBqQIkazPCTCxvH+UZ1A=[/tex]在(1,1)处沿方向[tex=6.714x1.357]P7sB08Gtos7P2Y+Z+IgKVgdtAj0yJjYUgKtFFPQ3fOs=[/tex]的方向导数。并进一步求：（1）在哪个方向上其导数有最人值；（2）在哪个方向上其导数有最小值；（3）在哪个方向上其导数为0；（4）求[tex=0.571x1.286]PTQwXI08cZXml6Nm1F/Zlw==[/tex]的梯度。
- 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: \( - {2 \over {15}}(x - 9)(x - 1) + {3 \over {40}}(x - 4)(x - 1) - {1 \over {24}}(x - 4)(x - 9)\)
- 【单选题】Which of the following matrices does not have the same determinant of matrix B: [1, 3, 0, 2; -2, -5, 7, 4; 3, 5, 2, 1; -1, 0, -9,-5] A. [1, 3, 0, 2; -2, -5, 7, 4; 0, 0, 0, 0; -1, 0, -9, -5] B. [1, 3, 0, 2; -2, -5, 7, 4; 1, 0, 9, 5; -1, 0, -9, -5] C. [1, 3, 0, 2; -2, -5, 7, 4; 3, 5, 2, 1; -3, -5, -2, -1] D. [1, 3, 0, 2; -2, -5, 7, 4; 0, 0, 0, 1; -1, 0, -9, -5]