Mathematica 6操作功能/代數運算
From 高材生
使用心得分享
- 數學式子輸入完成後,要記得執行,軟體才會運算。
- 小心大括號 { } 是否會遺漏!
- 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 |
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
- 可解兩函數方程式
- 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.
- 某函數除以除數,產生商、餘式。
- 除法求:商&餘
PolynomialRemainder
gives the remainder from dividing p by q, treated as polynomials in x.
- 某函數除以除數,產生餘式
- 除法求:餘
PolynomialQuotient
gives the quotient of p and q, treated as polynomials in x, with any remainder dropped.
- 某函數除以除數,產生商式
- 除法求:商
PolynomialGCD
gives the greatest common divisor of the polynomials
.
- 最高公因式
- PolynomialGCD
PolynomialLCM
gives the least common multiple of the polynomials
.
- 最低公倍式
- PolynomialLCM
Coefficient
gives the coefficient of form in the polynomial expr.
- 係數
- Coefficient
CoefficientList
gives a list of coefficients of powers of var in poly, starting with power 0.
- 列表:各變數的係數
- CoefficientList | CoefficientList-01
Exponent
- x最高次數的係數
- Exponent
Divisors
gives a list of the integers that divide n.
- 因數
- Divisors
Assuming
- 明示假設條件
- 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
- 在
的計算範圍為
~
Eliminate
Reduce
圓與球
Circle
- 圓
排列與組合
Range
generates the list {1,2,...,imax}.
- 自動產生數列
- Range Range 應用於組合
Select
picks out all elements ei of list for which crit[ei] is True.
- 取出
- Select
Permutations
generates a list of all possible permutations of the elements in list.
- 排列
- Permutations
Tuples
generates a list of all possible n-tuples of elements from list.
- 重複排列
- Tuples
Subsets
gives a list of all possible subsets of list.
- 組合
- Subsets
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
