已知\sin\alpha={2\over3},则\cos(\pi-2\alpha)=___。相关知识点: 试题来源: 解析 -{1\over9} 本题主要考查二倍角的余弦公式。 因为\sin\alpha={2\over3},则\cos(\pi-2\alpha)=-\cos2\alpha=-(1-2\sin^2\alpha)=-{1\over9}。 故本题正确答案为-{1\over9}。反馈...
2 Overview: the COS method for option pricing We model the stock price over time by a semimartingale \((S_{t})_{t\ge 0}\) on a filtered probability space \((\Omega ,\mathcal {F},P,(\mathcal {F}_{t})_{t\ge 0})\). The filtration \((\mathcal {F}_{t})_{t\ge 0}\...
函数y=\cos (x+{2\pi\over 3})在[0,\pi]上的最小值为___ 。相关知识点: 试题来源: 解析 -1 因为x\in [0,\pi],所以x+{2\pi\over 3}\in [{2\pi\over 3},{5\pi\over 3}],根据余弦函数的图象性质可知,当x+{2\pi\over 3}=\pi时,y=\cos (x+{2\pi\over 3})有最小...
I could never completely understand the fuss people make over that film. Yes, I know it has many very good qualities, but some shaky ones as well (alright, perhaps it's time I looked at it again). As for this particular movies attempt to capitalise on the success of the earlier film ...
A项:函数f(x)=|\cos2x|的周期为{\pi\over2},当x\in({\pi\over4},{\pi\over2})时,2x\in({\pi\over2},\pi),函数f(x)单调递增,故A正确; B项:函数f(x)=|\sin2x|的周期为{\pi\over2},当x\in({\pi\over4},{\pi\over2})时,2x\in({\pi\over2},\pi),函数f(x)单调递减,...
(1)求函数f(x)再1区间[0,\pi]上单调递增区间; (2)将函数f(x)的图象向左平移\varphi -{\pi}\over{24} 个单位长度得到函数g(x)的图象,若\varphi \in (0,\pi)且tan\varphi ={3}\over{4} ,求函数g(x)在区间[0,{\pi}\over{2} ]上的取值范围。相关...
varlanguages=require("@cospired/i18n-iso-languages");console.log("German => "+languages.getAlpha2Code('German','en'));// German => deconsole.log("German => "+languages.getAlpha3TCode('German','en'));// German => deuconsole.log("German => "+languages.getAlpha3BCode('German','...
2,3 For example, inulin, the major component in the root of E. angustifolia, activates the alternative complement pathway and thus promotes chemotaxis of neutrophils, monocytes, and eosinophils; solubilization of immune complexes; neutralization of viruses; and bacteriolysis. Echinacea also increases ...
In China, there is another speculation about Wukong’s height: monkeys are usually hunched over. Wukong is fourchitall when bent over and sevenchitall when standing upright. I studied primates in college. Monkeys usually walk on their palms (palmigrade) (fig. 3) and only stand when foraging...
from 0 to 63 do { round(sin(k * pi/32), SG, RN); };+static constexpr float SIN_K_PI_OVER_32[64] = {+0x0.0p0, 0x1.917a6cp-4, 0x1.8f8b84p-3, 0x1.294062p-2,+0x1.87de2ap-2, 0x1.e2b5d4p-2, 0x1.1c73b4p-1, 0x1.44cf32p-1,+0x1.6a09e6p-1, 0x1.8bc806p-1, 0x1....