Mathematics
Zhanxiong
  • Cincinnati, OH, United States
  • Member for 6 years, 11 months
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No longer an (on-campus) student.

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18
$f(x) =ax^6 +bx^5+cx^4+dx^3+ex^2+gx+h $, find $f(7)$.
Jul 26 '15
16
Limit of $n!/n^n$ as $n$ tends to infinity
Aug 8 '15
13
Prove $\limsup\limits_{n \to \infty} (a_n+b_n) \le \limsup\limits_{n \to \infty} a_n + \limsup\limits_{n \to \infty} b_n$
Aug 12 '15
12
Help with Spivak's Calculus: Chapter 1 Problem 22
Aug 14 '15
11
algebra problem, Solve the equation
Aug 12 '15
11
Postive-semidefiniteness of matrix with entries $1/(a_i+a_j)$
Jan 26 '16
10
Are the random variables $X + Y$ and $X - Y$ independent if $X, Y$ are distributed normal?
Jan 25 '16
10
How to Show that the Only Subspaces of $R^2$ are the zero subspace, $R^2$ itself, and the lines through the origin
Jan 26 '16
10
Proof of a change-of-measure formula
Dec 14 '16
9
Are the eigenvalues of the sum of two positive definite matrices increased?
Jan 22 '16
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How to interpret a QQ plot
28
Why L1 norm for sparse models
22
In a GLM, is the log likelihood of the saturated model always zero?
15
How to prove $P(A\cap B)\geqslant P(A)+P(B)-1$?
13
Why $P(C=c)$ instead of simply $P(C)$

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