Mathematica 6操作功能/代數運算

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使用心得分享

  1. 數學式子輸入完成後,要記得執行,軟體才會運算。
  2. 小心大括號 { } 是否會遺漏!
  3. 使用數字代替文字運算時,建議用質數比較好。

功能組合應用圖示

1.2.3.

1 基本 2 多項式 3 三角函數

1

2

3

4.5.6.

4 複數 5 矩陣行列式 6 排列組合

4

5

6

圖示編輯

單項功能說明

1 基本 2 多項式應用 3 矩陣行列式 4 向量 5 三角函數 6 圓與球 7 排列與組合

1

2

3

4

5

6

7

基本

Table

generates a list of the values of expr when i runs from 1 to Subscript[i, max].

  • 產生表單

Rotate

  • 旋轉

TraditionalForm

  • 傳統格式
  • 產生的效果,不能做運算式。

Text

displays with expr in plain text format.

  • 標籤

/.

  • 代入值運算
  • /.

Union

多項式應用

Solve

  • 解方程式
  • 要注意大括號:Solve[{函數,函數,函數,函數,...},{a,b,x,y,z,t,...}]

SolveAlways

Factor

factors a polynomial over the integers.

  • 因式分解

Simplify

performs a sequence of algebraic and other transformations on expr, and returns the simplest form it finds.

  • 化簡

Expand

expands out products and positive integer powers in expr.

  • 展開

Polynomial

PolynomialReduce

yields a list representing a reduction of poly in terms of the polyi. The list has the form{{a1,a2,...),b}, where b is minimal and a1poly1 + a1poly1 + ... + b is exactly poly.

PolynomialRemainder

gives the remainder from dividing p by q, treated as polynomials in x.

PolynomialQuotient

gives the quotient of p and q, treated as polynomials in x, with any remainder dropped.

PolynomialGCD

gives the greatest common divisor of the polynomials poly_{i}\, .

PolynomialLCM

gives the least common multiple of the polynomials poly_{i}\, .

Coefficient

gives the coefficient of form in the polynomial expr.

CoefficientList

gives a list of coefficients of powers of var in poly, starting with power 0.

Exponent

Divisors

gives a list of the integers that divide n.

Assuming

Refine

  • 暗示引用假設條件
  • Refine

矩陣行列式

MatrixForm

prints with the elements of list arranged in a regular array.

  • 圖示矩陣列表

Det

gives the determinant of the square matrix m.

  • 計算矩陣的值

向量

Norm

gives the norm of a number or array.

  • 長度、距離

三角函數

Arg

gives the argument of the complex number z.

  • 主幅角
  • Mathematica 6.0\, 的計算範圍為 -\pi \,\pi \,

Eliminate

Reduce

圓與球

Circle

排列與組合

Range

generates the list {1,2,...,imax}.

Select

picks out all elements ei of list for which crit[ei] is True.

Permutations

generates a list of all possible permutations of the elements in list.

Tuples

generates a list of all possible n-tuples of elements from list.

Subsets

gives a list of all possible subsets of list.

Length

gives the number of elements in expr.

  • 計算排列、組合個數
  • Length

Pictures

20081126Union 20081218CoefficientList-01 200812181034 200812181104 200812181706-SolveAlways

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