Yetao的新球拍

Yetao最近喜欢上打乒乓球,开始用正胶,可能是觉得击打比较舒服,后来看我和本的反胶球拍击球威力很大,就也想换个反胶。我手头只有一块 Hadraw SK 贴着快两年旧的 Tenergy 05-FX,拍子有点重,而且胶皮也老了,就给她换了一个 Joola X-Plode Sensitive,也是以击打为主。粘的时候旧板子除胶可真是费了一番功夫! 拍子粘好了: Hadraw SK + 2 * X-Plode Sensitive = 182 克 我的拍子:Timo Boll ZLF + 2 * Evolution MX-S (软胶面,硬海绵)= 192 克 Ben的拍子:Timo Boll Allround + 2 * Sapphira = 161 克 看来Ben的拍子还是最轻呀。

Yeti Math Bloggie 32: Fraction Calculations

The denominator of a certain fraction was 147 greater than its numerator. What was the denominator of this fraction, if after the fraction was reduced it became ? We can assume the numerator is , then the denominator is , and we have the following equation: (1)   The following steps solve the equation: (2) …

Yeti Math Bloggie 28: The Wonders of Absolute Value Explained

So first, Yeti must say zat absolute value is pretty easy to learn! I, Yeti shall also explain how they can be used in equations and other helpful stuffs. Lets start by reviewing the definition shall we? Absolute value: How far away is a # on a number line from zero Now, if you do …

Yeti Math Bloggie (27): Definition Of Slope and the Equation of a Straight Line

As the following picture shows, the slope of a straight line can be found by using the coordinates of two points and on the line as: (1)   A straight line consists of many points, and every point has an abscissa   and an ordinate . For a straight line there is an equation which …