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今年充值活动分析 今年的抽奖活动与去年类似,都有充值拍面,而今年增加量充值的抽CF点。好了废话不多说,我们开始具体分析。先说说充值抽CF点,我只冲了一点,抽了十几次,基本都是100和200CF点。所以我想说以数量不多的抽奖得到很多CF点是不实际的事情,建议碰运气的朋友做好心理准备。如果你可以抽超多次的话,还是很有可能拿到好东西的。接下来就是分析充值排名送CF点了。首先分析第一名,第一名送108800CF点,数量的确不少。那既然是第一名,冲的钱肯定不少,可是如果我们换个角度来看,对于大部分人,冲很多钱的原因就是要买英雄武器,那么这就成为了英雄武器预售V.S 新年充值 的价格比拼了。我们先来计算英雄武器预售的打折情况以黑武士为例预售价格688,会员减30,最终价格658。假如就以这个价格计算打折力度的话那么为658/888=0.741折。然后我们把这个打折力度换算为今年充值的活动力度那么x/(1088+x)=0.741 x=3113。也就是说如果你第一名充值花的钱比3113都少,那么你在这个活动里买英雄武器比英雄武器预售都便宜:如果多于3113,那么还是等下次预售购买更合算。可是很多人都有办法让Qb打折,那我们再假设Qb是0.95折的RMB,那么658*0.95=625.1 =0.704 折0.95x/(1088+x)=0.704 x=3113 与上一个结果没有变化。同理,如果你预售购买英雄武器和充值所花费的Qb的打折力度一样的话,那么3113就是要抢第一名且获得最大利益的极限。再来看第二名,用和上面一样的方法我们来计算。x/(888+x)=0.741 x=2541 结果同上类似,就不重复总结了。第三名:x/(699+x)=0.741 x=1968。 4-10名: x/(288+x)=0.741 x=824。11-100名:x/(150+x)=0.741 x=430。101-1000名:x/(50+x) =0.741 x=143 但是我们说如果你为了很高的排名去充的话一定有很多抽奖的好东西,所以我们建立一个函数图像=0.741 所以y=0.350x 如果你在这次活动中被赠送的CF点(抽奖得到的CF点+排名赠送的CF点)大于0.350倍你充值的Qb的话,那么就可以说你这次比英雄武器预售还赚。这个活动和英雄武器预售一样都有赠品可以领,所以赠品造成的优惠差异就不考虑了。可是我们知道已经出过的英雄武器是不会再预售了,那么一般来说,已经出过的英雄武器只打8折,我们把8折带进去x/(y+x)=0.8 y=0.25x 那么第一名的极限就是4352,第二名3552,第三名2752,4-10 1152 , 11-100 600, 101-1000 200。同时如果你已经在抽奖环节拿到很多CF点了的话,可以按照这个函数计算一下是否要停止充值或者再冲一点拼一下名次。 接下来就是考虑要在什么时候买了,我们都知道每天排名是不一样的,那么在不同的天数参加活动可能就会影响你的排名。首先,活动刚开始的时候知道的人少,所以买的人就少,结果就是可以以相对较低的价格得到较多的赠送的CF点。接下来活动人数会慢慢增多,所以你付出的成本也会越来越高。根据去年的活动数据分析,在大年30和新年第一天的时候充值的人数和价格的比拼升到了最高,所以不建议大家在接近过年的时候买。新年第2天之后抢名次的竞争就趋于稳定了,也推荐大家在这个时候买。最后说一下,除去我以0.95折购买Qb为例子,其他的均为Qb为价格,如果你想得到准确要花的RMB的话,请自己把Qb转换RMB的价格计算一下。
【新拍】Babolat PLAY AeroPro Drive Product Description: This racquet is available for pre-sale. Racquets and demos due in stock on 1/27/15. The Babolat PLAY AeroPro Drive comes with a sensor in the handle which tracks all aspects of your game. This data is easily uploaded to your smartphone, tablet or computer where a detailed snapshot of your game awaits. You can even compare the results with friends or the wider community of PLAY users. Please click the VIDEO button below for more info on PLAY. Please note: Babolat has designed this racquet with the same specifications as the standard AeroPro Drive The AeroPro Drive is one of the most popular modern player's racquets of all time. The combination of speed, precision, pop and spin potential make it dangerous in the hands of aggressive baseliners. The fast feel conjures up images of Rafael Nadal who has endorsed multiple generations of this racquet. With this particular version, the player can track shot power, the ball's impact location on the stringbed, the number and type of strokes along with a host of other useful details. On court the Play version of the AeroPro Drive handles like a finely tuned machine, one that delivers near effortless targeting on the biggest strokes. The feel is surprisingly solid for a sub 12 ounce racquet. From the baseline this stick accelerates very rapidly through contact, allowing topspin players to create a heavy ball with an impressive range of angles and trajectories. On serves the fast feel and lively response makes for easy power and spin - both of which are aided by the stiff beam and open string pattern. At net the maneuverability makes the AeroPro Drive great for fast exchanges, while the stability provides a plush platform against pace. Even more impressive is the range of ability levels this racquet suits. From strong beginners to the professional ranks, the AeroPro Drive offers truly exceptional playability. Specs: Head Size: 100 sq. in. / 645.16 sq. cm. Length: 27in / 68.58cm Strung Weight: 11.3oz / 320.35g Balance: 13in / 33.02cm / 4 pts HL Swingweight: 318 Stiffness: 69 Beam Width: 23mm / 26mm / 24mm / Composition: Graphite Power Level: Medium Stroke Style: Full Swing Speed: Fast Racquet Colors: White/ Black/ Orange/ Yellow Grip Type: Syntec Pro String Pattern: 16 Mains / 19 Crosses Mains skip: 8T, 8H Two Pieces No Shared Holes String Tension: 50-59 pounds 价格:$349 详情请见:http://tieba.baidu.com/mo/q/checkurl?url=http%3A%2F%2Fwww.tennis-warehouse.com%2FBabolat_PLAY_AeroPro_Drive%2FdescpageRCBAB-BAPDPL.html&urlrefer=73b797dc3e072388340d5159212e87e2
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