OurteacheroftentellsusnottotoomuchtimesurfingtheInternet.It'sbadforourhealth.()A.costB.spendC.takeD.pay
Our teacher often tells us not to ________too much time surfing the Internet.It's bad for our health.( )
A. cost
B. spend
C. take
D. pay
设A是N阶实方阵(1)当N为奇数且AA^T=I及|A|=1时,证明|I-A|=0(零)(2)当M为 2020-05-13 …
已知是i,m,n正整数,且1 (1+n)^m第一小问的A(i m)和A(i n)是排列公式,上面i 2020-05-16 …
35.—Hey ,look where you are going —Oh ,I’m terrib 2020-05-16 …
帮忙做道微积分题吧...大一的...设函数f(x)在[0,a]上连续,在(0,a)内可导,且f(0 2020-06-11 …
谁知道这个结果是怎么得出来的,我怎么也算不出来.F=500*(F/500,8%,10)=7243. 2020-06-14 …
若f(z)=2z+z-3i,f(z+i)=6-3i,求f(-z).若f(z)=2Z+A-3i,f(A 2020-10-31 …
lim[cos(u/4n)+cos(3u/4n)+.+cos(2n-1)u/4n]/n这里n趋于无穷 2020-11-01 …
年金终值系数问题年金终值F=A(F/A,i,n),我在财管书上看到的公式是F=A*∑(1+i)t-1 2020-12-31 …
在资金时间价值计算时,i和n给定,下列等式中正确的有().A.(F/A,i,n)=[(P/F,i,n 2021-01-14 …
1、在资金时间价值计算时,i和n给定,下列等式中正确的有?为什么?1、A(F/A,i,n)=[(P/ 2021-01-14 …