一道SAT数学for how many integers n is (2n+1)(3n-11) a negative n
how many integers n are there such that 5/61大于1/n大于13/57?
问一道SAT数学题:n>5,then in terms of n,how much less than n-4 is 5
数学英语翻译 For how many positive intergers n does 根号n differ fro
SAT一道数学how many positive four-digit integers have 1 as their
证明不等式:(1/n)^n+(2/n)^n+(3/n)^n+.+(n/n)^n
how many ordered pairs of positive integers(m,n)satisfy the
If3morethan n is a negative number and if5 more than n is a
一道极限题,lim[n^2(2n+1)]/(n^3+n+4)n->∞
用数学归纳法证明(2^n-1)/(2^n+1)>n/(n十1)(n≥3,n∈N+)
用数学归纳法证明:1×2×3+2×3×4+…+n×(n+1)×(n+2)=n(n+1)(n+2)(n+3)4(n∈N
sat的2道数学题!1.If j k and n are consecutive integers such that
求一道极限题lim[(a^1/n+b^1/n)/2]^n n→∞