• 2022-06-15 问题

    不定积分$\int<br/>\tan ^{3}x \sec x\text{d}x=$( ) A: $\frac{1}{3} \sec^3 x+\sec x+C$ B: $\frac{1}{3} \sec^3 x-\sec x+C$ C: $\sec^3 x-\sec x+C$ D: $\sec^3 x+\sec x+C$

    不定积分$\int<br/>\tan ^{3}x \sec x\text{d}x=$( ) A: $\frac{1}{3} \sec^3 x+\sec x+C$ B: $\frac{1}{3} \sec^3 x-\sec x+C$ C: $\sec^3 x-\sec x+C$ D: $\sec^3 x+\sec x+C$

  • 2022-06-10 问题

    \( \int {\sec x(\sec x - \tan x)dx} = \)( ) A: \( \tan x - \sec x + C \) B: \( \tan x + \sec x + C \) C: \(- \tan x - \sec x + C \) D: \(- \tan x + \sec x + C \)

    \( \int {\sec x(\sec x - \tan x)dx} = \)( ) A: \( \tan x - \sec x + C \) B: \( \tan x + \sec x + C \) C: \(- \tan x - \sec x + C \) D: \(- \tan x + \sec x + C \)

  • 2021-04-14 问题

    执行完下列操作后a与b的值分别为( ) Unsigned char a,b,sec sec=312; a= sec/10; b= sec%10;

    执行完下列操作后a与b的值分别为( ) Unsigned char a,b,sec sec=312; a= sec/10; b= sec%10;

  • 2022-06-12 问题

    Because Huawei was sanctioned by the US, therefore Huawei was fighting against globalization.

    Because Huawei was sanctioned by the US, therefore Huawei was fighting against globalization.

  • 2022-06-04 问题

    下列哪个提示符表示管理员目前正处于VRP系统的系统视图下?() A: B: [Huawei] C: {Huawei} D: /Huawei/

    下列哪个提示符表示管理员目前正处于VRP系统的系统视图下?() A: B: [Huawei] C: {Huawei} D: /Huawei/

  • 2022-06-06 问题

    荣耀20S的CPU型号是() A: HUAWEI Kirin810(麒麟810) B: HUAWEI Kirin 710(麒麟710) C: HUAWEI Kirin 980 (麒麟980) D: HUAWEI Kirin 985 (麒麟985)

    荣耀20S的CPU型号是() A: HUAWEI Kirin810(麒麟810) B: HUAWEI Kirin 710(麒麟710) C: HUAWEI Kirin 980 (麒麟980) D: HUAWEI Kirin 985 (麒麟985)

  • 2022-06-08 问题

    设 $y=\tan x^2$,则 $y'=$( ). A: $\sec x^2$ B: $\sec^2 x^2$ C: $2x\sec^2 x$ D: $2x\sec^2 x^2$

    设 $y=\tan x^2$,则 $y'=$( ). A: $\sec x^2$ B: $\sec^2 x^2$ C: $2x\sec^2 x$ D: $2x\sec^2 x^2$

  • 2022-06-17 问题

    下面那个命令是修改交换机名称的:() A: A.sysname huawei B: B.password huawei C: C.service-type telnet level 1 D: D.local-user huawei

    下面那个命令是修改交换机名称的:() A: A.sysname huawei B: B.password huawei C: C.service-type telnet level 1 D: D.local-user huawei

  • 2021-04-14 问题

    雨课堂: \( \int {\sec x(\sec x - \tan x)dx}  = \)(  )

    雨课堂: \( \int {\sec x(\sec x - \tan x)dx}  = \)(  )

  • 2022-06-03 问题

    下面可以让Div水平居中的css设置是( ) A: .sec { margin:0 auto; } B: .sec { margin:auto auto; } C: .sec { margin: 0 0; } D: .sec { margin: auto 0;}

    下面可以让Div水平居中的css设置是( ) A: .sec { margin:0 auto; } B: .sec { margin:auto auto; } C: .sec { margin: 0 0; } D: .sec { margin: auto 0;}

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