(UNDUND)UNDUND,明天UNDUND,比UNDUNDUND-|||-https:/img.cdnjtzy.com/zyb_f7db911aea7c12e0b0e9a047ae02bac5.jpg(+3times dfrac (1)(5))-(-4dfrac (3)(4))-(+1dfrac (3)(5))+3dfrac (3)(4)-|||--dfrac (3)(4)+dfrac (3)(6)+dfrac (1)(3)-dfrac (1)(2)-|||-3 (-2000dfrac (5)(6))+(-1999dfrac (2)(3))-(-4000dfrac (3)(4))+(-1dfrac (1)(2))-|||- 0-21 dfrac (2)(3)+(+3dfrac (3)(4))-(-dfrac (2)(3))-(+0.25)-|||-5 -3.5div dfrac (7)(8)times (-1dfrac (3)(4))-|||-6 (-dfrac (3)(4))times (-1dfrac (1)(2))div (-2dfrac (1)(4))-|||-7 (-dfrac (2)(3))times dfrac (1)(2)div dfrac (1)(3)div (-0.5)-|||-8如果a.b互为倒数,c.d互为相反数 |m|=3 且m大-|||-于0,求4分之 -3c-3d+dfrac (2)(5) 的值-|||-9 (-dfrac (1)(4)-dfrac (1)(2)+dfrac (1)(6))times (-12)-|||-10计算 (-5dfrac (5)(6))-(-9dfrac (2)(3))-(-17dfrac (3)(4))+(-3dfrac (1)(2))-|||-((-2))^3times ((-dfrac {2)(3))}^2times ((dfrac {3)(2))}^3-|||--(2)^4div (-8)-|||-((-1))^2007-(1)^2008-|||-((-2))^2004+((-2))^2005-|||- ((-2))^2-(-52)times ((-1))^5+87div (-3)times ((-1))^4-|||-(-dfrac (1)(3))times 3div 3times (-dfrac (1)(3))-|||-17 ((-12))^2div ((-4))^3-2times ((-1))^2n-1-|||-[ ((-2))^4+((-4))^2times ((-1))^7] 2m 次方 times (53+35)-|||-结果!

2.确定常数a，b的值，使函数f(x)=}(x+a)/(x^2)+1,&x<0b,&x=01+(2)/(x))^x,&x>0在x=0处连续.

求函数=dfrac (ln x)(1+{x)^2} 的导数。

15.已知函数 =(x)^2cos 2x+arctan (e)^x ,求y'。

【例32】lim_(xtoinfty)(3x^2+5)/(5x+3)sin(2)/(x)=____.

函数z=(arcsin(2-x^2-y^2))/(sqrt(x-y^2))的定义域是（ ）A. (x,y)|x>y^2B. (x,y)|1leq x^2+y^2leq3C. (x,y)|1leq x^2+y^2leq3cup(x,y)|x>y^2D. (x,y)|1leq x^2+y^2leq3cap(x,y)|x>y^2

聚点一定是内点.A. 对B. 错

14. 若正四面体的棱长为a,则其内切球的半径-|||-为 dfrac (sqrt {6)}(12)a

73、某考试有30人参加，每人得分都是0~100之间的整数且互不相同。已知得分不低于90的人平均分为93.8分，小姜得了92分，问他的成绩排名最低可能是第几名?A. 4B. 5C. 7D. 8

确定常数a,b的值，使函数f(x)={}(x+a)/(x^2)+1,&x<0b,&x=0,1+(2)/(x))^x,&x>0.在点x=0处连续.

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