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高数一函授试题库

《高等数学一》课程复习题库一. 选择题1. 0sin 3limx xx→=( )B. 132. 0sin lim 22x ax x→=,则a =( )B. 12 D. 143. 0sin 5sin 3lim x x x x →-⎛⎫⎪⎝⎭=( ) B. 12 4. 极限0tan 3lim x xx →等于( )A 0 B3 C7 D 55.设()2,0,0x x x f x a x ⎧+<=⎨≥⎩,且()f x 在0x =处连续,则a =( )B. 1-6. 设()21,10,1ax x f x x ⎧+<=⎨≥⎩,且()f x 在1x =处连续,则a =( )B. 1- D. 27. 设()21,02,0,0x x f x a x x x ⎧<⎪⎪==⎨⎪>⎪⎩在0x =处连续,则a =( )B. 1- D. 128.设2cos y x =,则y '=( )A. 2sin xB. 2sin x -C. 22sin x x -D. 22sin x x 9. 设21y x -=+,则y '= ( )A.32x -B.12x --C.32x --D.121x --+ 10.设5sin y x x -=+则y '=( )A .65cos x x --+B 45cos x x --+ C.45cos x x --- D.65cos x x --- 11. 设51y x=,则dy =( ) A.45x - .B.45x dx -- C. 45x dx D.45x dx - 12. 设1cos 2,y x =-则dy =( )A .sin 2xdxB sin 2xdx - C.2sin 2xdx D.2sin 2xdx - 13. 设()2ln 1,y x =+则dy =( ) A .21dx x + B 21dx x -+ C.221xdx x + D.221xdxx-+ 14. ()1lim 1xx x →-=( )A. eB. 1e -C. 1e --D. e - 15.()xx x 21021lim+→ =( ) A 0 B∞ Ce D2e16. 01lim 1xx x →⎛⎫+= ⎪⎝⎭( )A. eB. 1e - D. 117.226lim 2x x x x →+--=( )A. 1B. -2C.5D. -118.2231lim2x x x x x →∞++=- ( ) A. 32- B. 23- C. 23 D. 3219.2lim 43x x x →∞+=- ( )A. 14B.0C. 23-D. 1220. 设()01f x '=,则()()0002limh f x h f x h→+-=( )B.1C. 1221. 设()102f '=,则()()020limh f h f h →-=( ) B.1 C.1222.设1sin 3xy =+,则()0y '=( )B. 13 D. 13-23. .设()2ln 1y x =+,则()1y '=( ) B.12 D. 12- 24. 设x y e -=,则()1y ''=( ) A. e B. 1e - D. 1 25.设y z x y =+,则(,1)e zy∂=∂( )A ,1e +B ,11e+ C , 2 D , 126. sin xdx =⎰( )A .sin x C +B sin xC -+ C. cos x C + D.cos x C -+27.21xdx x =+⎰( )A .()2ln 1x C ++B ()22ln 1xC ++ C. ()21ln 12x C ++ D. ()ln 1x C ++ 28.()2xx dx +=⎰( )A .32x x C ++ B3212x x C ++ C. 321132x x C ++ D. 32x x C -+ 29.112x dx =⎰( )B. 32C. 2330.10x e dx -=⎰( )A. 1e -B. 11e --C. 1e --D. 11e -- 31.()1213xx dx --=⎰ ( )A . 0 B. 1 C .12 D . 2332.设2101()212x x f x x ⎧+≤≤=⎨<≤⎩,则20()f x dx ⎰=( )A . 1 B. 2 C . 83 D . 10333.设23z x y x =+-,则zx∂=∂( ) A. 21x + B. 21xy + C. 21x + D. 2xy34.设e sin xz x y =,则22zx∂∂=( )A.e (2)sin x x y +B. e (1)sin x x y +C. e sin x x yD. e sin x y35.设3233z x y x y =-,则2zx y∂∂∂=( )A. 22318x xy -B. 366xy y -C. 218x y -D. 3229x x y -36.设函数()2sin z xy =,则22zx∂=∂( )37.设xyz e =,则2zx y∂=∂∂( ) 38.微分方程0y y '-=,通解为( )A.x y e C =+B. x y e C -=+C. x y Ce =D. x y Ce -= 39. 微分方程20y x '-=,通解为( )A.2y x C =+B. 2y x C -=+C. 2y Cx =D. 2y Cx -= 40. 微分方程0xy y'+=,通解为( ) A.22y x C =+ B. 22y x C =-+ C. 22y Cx = D. 2y x C -=+41.幂级数02nn n x ∞=∑的收敛半径=( )A .12 D. +∞42. 幂级数0n n x ∞=∑的收敛半径为( ).2 C43.设0i n u ∞=∑与0i n v ∞=∑为正项级数,且i i u v <,则下列说法正确的是( )A.若0i n u ∞=∑收敛,则0i n v ∞=∑收敛B. 若0i n u ∞=∑发散,则0i n v ∞=∑发散C.若0i n v ∞=∑收敛,则0i n u ∞=∑收敛 B. 若0i n v ∞=∑发散,则0i n u ∞=∑发散44. 设函数()2x f x e =,则不定积分2x f dx ⎛⎫⎪⎝⎭⎰=( )A. 2x e C +B. x e C +C. 22x e C +D. 2x e C + 45. 设()f x 为连续函数,则()bad f x dx dx =⎰( ) A. ()()f b f a - B. ()f b C. ()f a -46.设()0()sin ,x f t dt x x f x =⎰则=( )A ,sin cos x x x +B ,sin cos x x x -C ,cos sin x x x -D ,(sin cos )x x x -+ 47. 方程0x y z +-=表示的图形为( ) A.旋转抛物面 B.平面 C.锥面 D.椭球面48. 如果()f x 的导函数是,则下列函数中成为()f x 的原函数的是( )49. 当0x →时,与变量2x 等价的无穷小量是( ) 50. 当0x →时,21x e -是关于x 的( )A .同阶无穷小B .低阶无穷小C .高阶无穷小D .等价无穷小51. 当+→0x 时,下列变量中是无穷小量的是( ) A 、x 1 B 、x xsin C 、1-x e D 、x1 52.当0x →时,kx 是sin x 的等价无穷小量,则k =( ) .1 C53.函数33y x x =-的单调递减区间为( )A. (,1]-∞-,B. [1,1]-C. [1,)+∞D. (,)-∞+∞ 54.曲线3y x -=在点(1,1)处的切线的斜率为( ) B.-2 C.-355.1x =是函数()211x f x x -=-的( )A .连续点B .可去间断点C .跳跃间断点D .无穷间断点二、填空题1.()10lim 1sin xx x →+= .2. 若0sin lim 2sin x mxx→=,则=m3. 0tan lim ______21x xx →=+4. xx x sin 121lim--→=5. 21lim 1xx x →∞⎛⎫- ⎪⎝⎭= .6. ()()2x 35lim 5321x x x →∞+=++ 7. 2241lim21x x x x →-+=+ 8. 201cos limx xx→-=9. 30tan sin limx x xx →-=10. arctan limx xx→∞=11.22lim 1xx x →∞⎛⎫+= ⎪⎝⎭12.设函数2ln y x x =,则y '=13.已知tan y x =,则y ''= . 14.已知112+=x y ,则y '= 15.已知1=+xy e x ,则dydx= 16. 已知)12(sin 2-=x y ,则dydx=17.设20,()0,0xe x xf x x ⎧≠⎪⎪=⎨⎪⎪=⎩,则)(f 0'=___________。

18. 设()2ln 1y x =+,则(0)y '= 19. 已知,则 . 20.20(1)x e x dx +-⎰=21.1⎰=22.11cos x xdx -=⎰.23. x xe dx ⎰= 24. ln xdx ⎰=25. 3sin cos x xdx ⎰= . 26. ()xex dx -=⎰27.21xdx x =+⎰28.()343x dx +=⎰__________29.微分方程20yy x '+=的通解是___________ 30.微分方程3'1xy y x -=+的通解是___________. 31.设2cos z y x =则dz == _______. 32.设sin 2y x x =,则dy = 33. 设()ln z xy =,则 dz = 34. 设22z x y y =+,则zx∂=∂ 35. 设220x y z +-=,则2zx y∂=∂∂ 36.设函数2x z x ye =+,则zx∂=∂ 37.设()2sin z x y =,则zy∂=∂ 38.曲线 sin y x =在4x π=处的切线方程是39. 曲线ln y x =上经过点(1,0)的切线方程是 40.过0(1,1,0)M -且与平面1x y z -+=平行的平面方程为 41.曲线1sin y x =+在点(0,1)处的切线的斜率k = 42.设{}2(,)01,01y DD x y x y xe dxdy -=≤≤≤≤=⎰⎰,则_____________.43.二元函数22z x y =+的极小值为 .44.若0=x 是函数sin y x ax =-的一个极值点,则a =__________ 45.2x f dx ⎛⎫'= ⎪⎝⎭⎰. 46.若()xf x e -=,则()10f x dx '-=⎰__________47.已知()2f x x=, 0x =是()f x 的 间断点。

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