identity matrix

Identity Matrix -- from Wolfram MathWorld    美麗的某小姐有一個不太好的習慣,就是喜歡放屁。 一天,這位小姐要搭公車上班, 身邊照例有數位熱情的追求者尾隨在她後面, 上了車沒多久,小姐的老毛病就忍不住犯了, 身邊一位男士很機警馬上大聲說"是我放的" 可是沒過多久,小姐The identity matrix is a the simplest nontrivial diagonal matrix, defined such that I(X)=X (1) for all vectors X. An identity matrix may be denoted 1, I, or E (the latter being an abbreviation for the German term "Einheitsmatrix"; Courant and Hilbert 1989...

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Mathwords: Identity Matrix      有一天老師在發作業,王小華、林小毛......王肚皮..王肚皮...  叫到王肚皮的時候沒人來領作業本..就在這時候,有位小朋友舉手說:「老師,我沒拿到作業本!」  老師說:「你叫什麼名字ㄚ!」  我 叫王月坡   &this page updated 28-jul-14 Mathwords: Terms and Formulas from Algebra I to Calculus written, illustrated, and webmastered by Bruce Simmons...

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Identity matrix - Rosetta Code印地安人問他們的新酋長,這個冬天會是寒冷的還是溫暖的。 這位年輕的酋長從沒學過祖先的本事,他只是吩咐他們去撿木柴,然後,他走到一邊,給國家氣象局打電話。 “今年冬天的天氣會不會很糟糕?”他問。 “看上去是這樣的。”他得到這麼個回答。 於是酋長要求大家收You: 0 Identity_Matrix: You entered 0. You: 1 Identity_Matrix: You entered 1. Identity_Matrix: [1] You: 3 Identity_Matrix: You entered 3. Identity_Matrix: [1, 0, 0] Identity_Matrix: [0, 1, 0] Identity_Matrix: [0, 0, 1] You: 5 Identity_Matrix: You entered ...

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xkcd: Useless      慣性實例物理老師在講慣性這一課,一個學生在下面講廢話。 老師暗示了他一眼,可他仍我行我素。 老師:我剛才講了什麼內容? 學生:慣性。 老師:請你舉個實例。 學生:剛才我在下面講話,雖然您暗示了我一眼,但我沒法Warning: this comic occasionally contains strong language (which may be unsuitable for children), unusual humor (which may be unsuitable for adults), and advanced ... BTC 1FhCLQK2ZXtCUQDtG98p6fVH7S6mxAsEey We did not invent the algorithm. The ......

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Matrix Multiplication / The Identity Matrix    在便利商店的後面四個賭鬼賭意正濃,突然警察來了他說:被我抓到了,第一個人說:我來跟朋友聊天,第二個說我來泡茶的,第三個說:我陪朋友,警察指向第四個人,說:絕對是你,第四個人說:你說我跟誰玩   Uses worked examples to demonstrate matrix multiplication and multiplication by the 'identity' matrix. ... Multiplying by the identity Multiplying by the identity matrix I doesn't change anything, just like multiplying a number by 1 doesn't change anythin...

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Matrix (mathematics) - Wikipedia, the free encyclopedia    有一次,  小明到了學校..老師看見他的右手斷了,便問:"才幾天不見,你的手是怎麼了?"  小明說:"因為我懶阿~"  老師又問:"為什麼懶手就會斷?"  他回答:"有一次上學途中,走阿走阿... 就有一顆小石子跑到我的鞋子裡...This operation is called scalar multiplication, but its result is not named “scalar product” to avoid confusion, since “scalar product” is sometimes used as a synonym for “inner product”. Transposition The transpose of an m-by-n matrix A is the n-by-m mat...

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