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共找到 840 与=c×an 相关的结果,耗时82 ms
英语翻译Though we no long supply Type SB-95.we have in stock type SB-99,which is both better in performance and more reasonable in price.W
英语
are pleased t
关于数列与不动点法,到底不动点法适用或者不适用什么样的数列?(有人说有些数列没有不动点,可我怎么看出来=.=)还有,用不动点法解数列,我看不懂别人的例题如a(n+1)=(a(an)+b)/(c(an)+d)
其他
若(1+x)+(1+x)2+…+(1+x)n=a0+a1(1-x)+a2(1-x)2+…+an(1-x)n则a0-a1+a2-…+(-1)nan等于()A.34(3n−1)B.34(3n−2)C.32(3n−2)D.32(3n−1)
其他
初中题there is( )"s"and( )"u"in the word "use".A,a/a B,a/an C,an/an D,an/a 为什么选D
英语
已知等差数列{An}的前几项和为Sn,若向量OB=a1向量OA+a200向量OC.A、B、C三点共线(不过原点).则S200=?
数学
用max(a1,a1,…,an),min(a1,a1…,an)分别表示a1,a1,…,an中的最大与最小者,有下列结论:①max(a,b)+max(c,d)=max(a+b,c+d,a+c,b+d);②min(a,b)+min(c,d)=min(a+c,a+d,b
其他
b+d);③若max(a,b
Get up a little_____,______you will be late again.A.early...so B.earlier...or C.earliest buD.early...and _______of them has an English
英语
book.A.All B.B
My parents asked me to send them _____ e-mail once a weekA a B an C the D/
英语
写理由(详细)1.These apples are redder that the ____ you gave me.A.those B.ones C.them D.they2.He has three sons .One is a doctor._____ two
英语
re teachersA.t
1.An accident---on this road last week.A:has been happened B:was happened C:is happened D:happened2.Neither of them---in China.A:is ma
英语
e B:are made C
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