• 2022-06-03 问题

    lLIM[〔X4-1〕/〔X3-1〕]X趋近于1求极限

    lLIM[〔X4-1〕/〔X3-1〕]X趋近于1求极限

  • 2022-06-07 问题

    求不定积分[img=112x35]17da6538063a9e4.png[/img]; ( ) A: (x^4*log(x)^2)/4 + (x^4*(log(x) - 1/4))/ B: (x^4*log(x)^2)/4 - (x^4*(log(x) - 1/4))/8 C: (x^4*log(x)^2)/4 - (x^4*(log(x) - 1/4)) D: (x^4*log(x)^2)/4 + (x^4*(log(x) - 1/4))/8

    求不定积分[img=112x35]17da6538063a9e4.png[/img]; ( ) A: (x^4*log(x)^2)/4 + (x^4*(log(x) - 1/4))/ B: (x^4*log(x)^2)/4 - (x^4*(log(x) - 1/4))/8 C: (x^4*log(x)^2)/4 - (x^4*(log(x) - 1/4)) D: (x^4*log(x)^2)/4 + (x^4*(log(x) - 1/4))/8

  • 2022-11-03 问题

    A={X|X≤1},B={X|X>-4},则A∩B=__________. A: {X|X≤1} B: {X|x>-4} C: {X|-4

    A={X|X≤1},B={X|X>-4},则A∩B=__________. A: {X|X≤1} B: {X|x>-4} C: {X|-4

  • 2022-07-26 问题

    函数f(x)=的全部间断点为 A: x=-1及x=4 B: x=-1及x=-4 C: x=1及x=-4 D: x=1及x=4

    函数f(x)=的全部间断点为 A: x=-1及x=4 B: x=-1及x=-4 C: x=1及x=-4 D: x=1及x=4

  • 2022-05-28 问题

    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: \( - {2 \over {15}}(x - 9)(x - 1) + {3 \over {40}}(x - 4)(x - 1) - {1 \over {24}}(x - 4)(x - 9)\)

    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: \( - {2 \over {15}}(x - 9)(x - 1) + {3 \over {40}}(x - 4)(x - 1) - {1 \over {24}}(x - 4)(x - 9)\)

  • 2022-05-26 问题

    求函数$f(x)=x^4 $在$x=-1$的导数 A: $4$ B: $1$ C: $-1$ D: $-4$

    求函数$f(x)=x^4 $在$x=-1$的导数 A: $4$ B: $1$ C: $-1$ D: $-4$

  • 2022-06-11 问题

    分解因式x4-1得

    分解因式x4-1得

  • 2022-06-07 问题

    解方程:4(x﹣1)=1﹣x

    解方程:4(x﹣1)=1﹣x

  • 2022-06-07 问题

    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

    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

  • 2022-06-01 问题

    {x丨x>1}∩{x丨x>4}=() A: {2,3} B: {x|x>1} C: {x丨x>4} D: 空集

    {x丨x>1}∩{x丨x>4}=() A: {2,3} B: {x|x>1} C: {x丨x>4} D: 空集

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