scipy

Python/numpy/19多项式.md

@@ -0,0 +1,54 @@
+
+## basic API 
+
+| poly1d\(c\_or\_r\[, r, variable\]\) | A one\-dimensional polynomial class\.                                    |
+|-------------------------------------|--------------------------------------------------------------------------|
+| polyval\(p, x\)                     | Evaluate a polynomial at specific values\.                               |
+| poly\(seq\_of\_zeros\)              | Find the coefficients of a polynomial with the given sequence of roots\. |
+| roots\(p\)                          | Return the roots of a polynomial with coefficients given in p\.          |
+
+## filter
+
+| polyfit\(x, y, deg\[, rcond, full, w, cov\]\) | Least squares polynomial fit\. |
+|-----------------------------------------------|--------------------------------|
+
+
+## calculus
+
+| polyder\(p\[, m\]\)    | Return the derivative of the specified order of a polynomial\.     |
+|------------------------|--------------------------------------------------------------------|
+| polyint\(p\[, m, k\]\) | Return an antiderivative \(indefinite integral\) of a polynomial\. |
+
+## Arithmetic
+
+| polyadd\(a1, a2\) | Find the sum of two polynomials\.                           |
+|-------------------|-------------------------------------------------------------|
+| polydiv\(u, v\)   | Returns the quotient and remainder of polynomial division\. |
+| polymul\(a1, a2\) | Find the product of two polynomials\.                       |
+| polysub\(a1, a2\) | Difference \(subtraction\) of two polynomials\.             |
+
+
+## 创建多项式
+
+* f = np.poly1d(a)
+## 求微分和积分
+* f.deriv()
+* f.integ()
+
+```py
+from numpy import poly1d
+p = poly1d([3,4,5])
+print(p)
+   2
+3 x + 4 x + 5
+print(p*p)
+   4      3      2
+9 x + 24 x + 46 x + 40 x + 25
+print(p.integ(k=6))
+   3     2
+1 x + 2 x + 5 x + 6
+print(p.deriv())
+6 x + 4
+p([4, 5])
+array([ 69, 100])
+```

Python/numpy/1概述.md

@@ -1,4 +1,6 @@
 # 量的定义
+> 定义n维数组，并且在数组上进行简单的变换与操作。
+
 
 ## 名称