• 2022-06-01 问题

    求定积分[img=179x43]17da65388c0b1ca.png[/img]; ( ) A: log(2^(1/2) + 1)/2 + 2^(1/2)/2 B: log(2^(1/2) + 1)/2 - 2^(1/2)/2 - 1/2 C: log(2^(1/2) + 1)/2 + 2^(1/2)/2 - 1/2 D: log(2^(1/2) + 1)/2 + 2^(1/2)/2 + 1/2

    求定积分[img=179x43]17da65388c0b1ca.png[/img]; ( ) A: log(2^(1/2) + 1)/2 + 2^(1/2)/2 B: log(2^(1/2) + 1)/2 - 2^(1/2)/2 - 1/2 C: log(2^(1/2) + 1)/2 + 2^(1/2)/2 - 1/2 D: log(2^(1/2) + 1)/2 + 2^(1/2)/2 + 1/2

  • 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

  • 2022-06-17 问题

    袋中装有3个黄球和3个白球,连续摸2次,摸出的2个球均为黄球,这一事件的信息量为()。 A: -log(1/3) B: -log(1/2) C: -log(1/5) D: -log(1/4)

    袋中装有3个黄球和3个白球,连续摸2次,摸出的2个球均为黄球,这一事件的信息量为()。 A: -log(1/3) B: -log(1/2) C: -log(1/5) D: -log(1/4)

  • 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

  • 2021-04-14 问题

    <img src="http://edu-image.nosdn.127.net/E6A0628104FCB0F521FBF2AAAC7F1968.png?imageView&thumbnail=890x0&quality=100" style="width: 558px; height: 33px;" />? syms xy=log(1/x*x+exp(x))+sin(1-x^2)dy/dx=diff(y,x)|syms xy=log(1/x/x+exp(x))+sin(1-x^2)dydx=diff(y,x)|syms xy=log(1/x/x+exp(x))+sin(1-x)^2dydx=diff(y,x)|syms xy=log(1/x/x+exp^x)+sin(1-x^2)dydx=diff(y,x)

    <img src="http://edu-image.nosdn.127.net/E6A0628104FCB0F521FBF2AAAC7F1968.png?imageView&thumbnail=890x0&quality=100" style="width: 558px; height: 33px;" />? syms xy=log(1/x*x+exp(x))+sin(1-x^2)dy/dx=diff(y,x)|syms xy=log(1/x/x+exp(x))+sin(1-x^2)dydx=diff(y,x)|syms xy=log(1/x/x+exp(x))+sin(1-x)^2dydx=diff(y,x)|syms xy=log(1/x/x+exp^x)+sin(1-x^2)dydx=diff(y,x)

  • 2022-10-24 问题

    求下列各式的值(5×2=10分)(1) 已知lg2 = a,lg3 = b,求log 3 12 的值;(2)若 y = log (2a + 1) x 是对数函数,则a的取值范围是?

    求下列各式的值(5×2=10分)(1) 已知lg2 = a,lg3 = b,求log 3 12 的值;(2)若 y = log (2a + 1) x 是对数函数,则a的取值范围是?

  • 2022-06-19 问题

    计算[img=87x27]1803072d5c80fa5.png[/img] A: Log[1+Exp[-2]] B: Ln[1.+Exp[-2.]] C: Log[1.+exp[-2]] D: Log[1+Exp[-2.]]

    计算[img=87x27]1803072d5c80fa5.png[/img] A: Log[1+Exp[-2]] B: Ln[1.+Exp[-2.]] C: Log[1.+exp[-2]] D: Log[1+Exp[-2.]]

  • 2022-06-14 问题

    实验命令“ syms x y; z=2*exp(x*y)+log(x+y); zx=diff(z,'x')”的结果是【】. A: 2*exp(x*y)+log(x+y); B: 2* y*exp(x*y)+1/(x+y); C: 2*x*exp(x*y)+1/(x+y); D: 无结果.

    实验命令“ syms x y; z=2*exp(x*y)+log(x+y); zx=diff(z,'x')”的结果是【】. A: 2*exp(x*y)+log(x+y); B: 2* y*exp(x*y)+1/(x+y); C: 2*x*exp(x*y)+1/(x+y); D: 无结果.

  • 2022-05-27 问题

    如果在大家都知道今天是9月1日的情况下,问你的朋友“明天是几月几号?”则答案中含有的信息量是()。 A: 1 B: log1 C: log(1/2) D: log(1/30)

    如果在大家都知道今天是9月1日的情况下,问你的朋友“明天是几月几号?”则答案中含有的信息量是()。 A: 1 B: log1 C: log(1/2) D: log(1/30)

  • 2022-06-04 问题

    *log(a的-1次方)

    *log(a的-1次方)

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