I’vegotabadcoldthesedays.I’vedonemuchsincethismorning.A.nothingB.somethingC.everythingD.anything
I’ve got a bad cold these days. I’ve done much since this morning .
A. nothing B. something C. everything D. anything
A
I’vegotabadcoldthesedays.I’vedonemuchsincethismor 2020-05-13 …
√a(a>0)可化成√(-1)*(-1)*a用复数的形式又可写成√a*i*i=-√a但是√a≠-√ 2020-05-13 …
线代题目已知A为n阶矩阵,则[I+(I-A)(I+A)^(-1)](I+A)=? 2020-06-10 …
----I'velookedeverywhere,butIhaven'tfoundanyblack 2020-07-17 …
P=A(1+i)^-1+A(1+i)^-2+A(i+i)^-3+……A(1+i)^-n（1）将两边 2020-07-25 …
已知复数ω满足ω-4=（3-2ω）i(i为虚数单位),z=5/ω+|z-2|,若z的平方根为a=b 2020-08-02 …
一道挺难的数学题i*i=-1则x*x=-1可变为x=+i或-ii还具有以下性质：i=ii*i=-1i 2020-11-01 …
1.设有inti；则表达式i=1,++i,++i||++i,i的值为（）.A.1B.2C.3D.42 2020-11-01 …
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 …