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  • 文学

    [LSS Short] Dandelion

    This story is part of LSS4 by XGN. Dandelion,dandelion,where will you fly? Will you take my heart away? "I am feeling not good today" It's late night, and Ookami the werewolf girl still could't fall asleep. "Damn the math test.. It must be the test……
    XGN 2020-04-28
  • 题&解

    [Crimson boy can you solve it?] [1] 简易琴生不等式两则

    简易琴生不等式两则,能使你在繁重的中考学习压力下锻炼思维,获得成功的快感!!! 1.x,y,z\in \mathbb{R}^+,xyz=1,证明: \frac{x^3}{(1+y)(1+z)}+\frac{y^3}{(1+x)(1+z)}+\frac{z^3}{(1+x)(1+y)}\geq\frac{3}{4} 2.\alpha>\beta>0.a_1,a_2,...a_n\in\mathbb{R}^+,证明: (……
    HDD 2020-04-28
  • 技术

    解析之美--曲线系

    注意:理解曲线系最重要的要点是将某方程F(x,y)=0中的多项式F(x,y)当做关于一点坐标的函数.当一点(m,n)在F(x,y)=0的图像上时,便满足F(m,n)=0 1.先从一道不能算曲线系精髓的直线系题目说起 如图AD平分∠BAC,AD上任取一点E,使得BE交边CD于F,CE交边BD于G 求证AD平分∠GAE ……
    HDD 2020-04-18
  • OBCYSIO

    Orange Boy Can You Solve It Out? Ep. 40

    Simple 思考题 Ninja Try to find any of three integers X,Y,Z in a given integer array A of length N so that X+Y=Z. Example Input: A={1,2,3} Output: X=1,Y=2,Z=3 Input: A={0} Output: X=0,Y=0,Z=0 Input: A={1,9,2,6,0,8,1,7} Output: X=1,Y=8,Z=9 Input: A=……
    XGN 2020-04-15