Lee

### Questions (16)

 3 What is $\max\limits_{\sum_{i=k}^{n}x_i\leq\sum_{i=k}^{n}y_i \\\forall k=1,2,\cdots,n} \prod_{i=1}^{n} x_i$ 3 exponential inequality $\frac{2^{2C_1}+2^{2C_2}-1}{2^{2C_1}}\geq\frac{2^{2\hat{C_1}}+2^{2\hat{C_2}}-1}{2^{2\hat{C_1}}}$ 2 What is the maximum value of $x^TAx$ subject to $x\in\{\pm1\}^n$? 2 Minimizing $R_1^2+R_2^2$ subject to $RT=I$ 2 Maximize $\det X$, subject to $X_{ii}\leq P_i$, where $X>0$

### Reputation (320)

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 4 Prove all elements $x_n \geq \sqrt{2}.$ 2 Proving that the arithmetic and geometric means of a collection of non-negative numbers lies between their minimum and maximum values 1 Length of a side of a triangle with angle relations 0 Simplify (W + Y) (W' + X' + Y) (X' + Y' + Z') 0 Derivative of cumulative sum function

### Tags (34)

 4 sequences-and-series 1 euclidean-geometry 4 algebra-precalculus 1 geometry 2 a.m.-g.m.-inequality 1 triangles 2 real-analysis 0 optimization × 8 2 proof-writing 0 linear-algebra × 4

### Accounts (3)

 Mathematics 320 rep 111 Stack Overflow 103 rep 3 Electrical Engineering 101 rep 1