sin cos 1 x

上健身房變成一種心理安慰...

2月 6, 2012

黃友陽

kuso

*Simplify Trig Expressions: Sin(x)/(1+ Cos(x)) + Cos(x)/Sin(x) - YouTube    誠意到就好了>0A http://www.door2math.com production.Sin(x)/(1+ Cos(x)) + Cos(x)/Sin(x)...

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你看你的吃相...

2月 5, 2012

劉安竹

kuso

1. Graphs of y = a sin x and y = a cos x - Interactive Mathematics - Learn math while you play with 小口點，別噎著了~ 1. Graphs of y = a sin x and y = a cos x by M. Bourne The Sine Curve y = a sin t The sine curve occurs naturally when we are examining waves. When waves have more energy, they go up and down more vigorously. We say they have greater amplitude. Let's ......

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"請勿停車"

2月 5, 2012

謝盼柳

kuso

*how to prove trig identities? (cos x / 1 - sin x = sec x + tan x) - YouTube誰會在這種地方停車...= = A http://www.door2math.com production.Verify(Prove) the identity: cos x / 1 - sin x = sec x + tan x....

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怎麼一臉囧樣...

2月 5, 2012

蔡若藍

kuso

Derivative of sin x - An approach to calculus昨天打通宵還輸了一屁股，當然囧啊!! The derivatives of the sin x, cos x, tan x, csc x, sec x, cot x, and arcsin x. The limit of sin x/x as x approaches 0. ... L EMMA. When θ is measured in radians, then Proof. It is not possible to prove that by applying the usual theorems on limits (Lesson...

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超萌的哆啦A喵~

2月 5, 2012

劉安竹

kuso

Integration of trig functions: int sin^2 x cos^4 x dx人家只不過是天氣冷所以戴了帽子跟圍圍巾~  \int sin^2xcos^4xdx \int(1-cos^2x)(cos^4x) \int(cos^4x-cos^6x)dx \cos^2 x = \frac {1 + \cos 2x}2 \frac{1}{2}\int cos^4xdx-\frac{1}{2}\int cos^6xdx...

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一想到星期一的工作量...

2月 5, 2012

葉紫蕊

kuso

Derivatives of sin x, cos x, tan x, e^x and ln x | Derivatives of common functions | Khan Academy人家就忍不住噴哭嘛!! T^T Lets say I have an equation sin x = 1/2. Then clearly, x = 30 degrees or pi/6 radians. Now if I differentiate both sides of the equation with respect to x (because both are equal, their derivatives should also be equal), I will have cos x = 0, right? But ...

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