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#import <UIKit/UIKit.h> @interface ANZDropDownField : UITextField <UITableViewDelegate, UITableViewDataSource> @property (nonatomic) NSArray* dropList; // 表示ãããããããªã¹ã @property (nonatomic) CGFloat displayNumOfRows; // è¡¨ç¤ºä»¶æ° @property (nonatomic) CGFloat heightOfListItem; // ãªã¹ãã¢ã¤ãã ã®é«ã @property (nonatomic) UIColor* borderColorForList; // ãªã¹ãã®æ ç· @property (nonatomic) UIFont* fontOfListItem; // ãªã¹ãã¢ã¤
{\bf x} = [{\it x}, \dot{{\it x}}]^T \\ {\bf M} = \begin{bmatrix} 1 & 0 \\ 0 & m \end{bmatrix} \\ {\bf f}({\bf x}) = \begin{bmatrix} \dot{x} \\ -k x - c \dot{x} + m g + f \end{bmatrix} #!/usr/bin/python #coding:utf-8 import sympy as sym import sympy.physics.mechanics as me x, v = me.dynamicsymbols('x v') m, c, k, g, t, f = sym.symbols('m c k g t f') # 座æ¨ç³»ã®ä½æ ceiling = me.ReferenceFrame('C') o = me
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