早教吧作业答案频道 -->英语-->
what'sitfor是什么意思呢?请举例说明~makesomesentencesplease
题目详情
what's it for是什么意思呢?请举例说明~
make some sentences please
make some sentences please
▼优质解答
答案和解析
-What is it?
-It's a pen.
-What's it for?
-For writing!(用来写字)
Just one example is enough!
-It's a pen.
-What's it for?
-For writing!(用来写字)
Just one example is enough!
看了what'sitfor是什么意...的网友还看了以下:
f(x)=e^x-kx,设函数F(x)=f(x)+f(-x),求证F(1)F(2)……F(n)>[ 2020-05-21 …
已知函数f(x)=e^x-x(e是自然对数的底数),且n∈N*,Sn=∫n0(n在上面)f(x)d 2020-06-05 …
已知函数f(x)=e^x-ln(x+1)(1)求函数f(x)的单调区间(2)证明e+e^1/2+e 2020-06-06 …
E(x)=f(x+1/2)-1在R上为奇函数,an=f(0)+f(1/n)+f(2/n)+…+f[ 2020-06-07 …
设X1,X2,…,Xn(n≥2)为来自总体N(0,1)的简单随机样本,.X为样本均值,S2为样本方 2020-06-10 …
已知f(x)在x=a可导,且f(x)>0,n为自然数,求lim[f(a+1/n)/f(a)]^n( 2020-06-12 …
设X1,…,Xn是取自正态总体N(0,1)一个简单随机样本,则下列结论中错误的是()A.n.X~N 2020-07-01 …
f(x)=e^xx∈R,g(x)=ln[f(x)+a],a是常数.(1)求证f(x)>=x+1(2) 2020-12-23 …
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 …
读北半球经纬网示意f,回答小~0题.0t甲着的经纬度是()A.40°N,20°EB.40°N,20° 2021-01-20 …