Description Last September, Hangzhou raised the taxi fares. The original flag-down fare in Hangzhou was 10 yuan, plusing 2 yuan per kilometer after the first 3km and 3 yuan per kilometer after 10km. The waiting fee was 2 yuan per five minutes. Passen
1.安装matplotlib pip3 install matplotlib sudo apt install python3-tk 2.分段函数 from pylab import * x = linspace(0,8,200) cond = [True if (i > 2 and i < 5) else False for i in x] y = sin(x)*(x<2)+cos(x)*cond + x*(x>5) plot(x,y),show() 3.
更新:x1,y1,x2,y2不用long long 会wa.. #include<iostream> #include<cstring> #include<cstdio> #include<algorithm> using namespace std; #define maxn 200005 #define lson l,m,rt<<1 #define rson m+1,r,rt<<1|1 #define ll long long l
1.绘制分段函数:y=4sin(4πt)-sgn(t-0.3)-sgn(0.72-t) import numpy as npimport matplotlib.pyplot as plt#绘制分段函数:y=4sin(4πt)-sgn(t-0.3)-sgn(0.72-t) def sgn(x): if x > 0: return 1 elif x < 0: return -1 else: return 0 t = np.arange(0, 1, 0.01)y = []for i in t: y_
本题要求计算下列分段函数f(x)的值(x为从键盘输入的一个任意实数): 输入格式: 直接输入一个实数x 输出格式: 在一行中按“f(x)=result”的格式输出,其中x与result都保留三位小数. 输入样例: 3.14 输出样例: f(3.140)=0.865 import math x = float(input()) a= math.fabs(x) if a < 1: b=math.sqrt(2-2*x) print('f({:.3f})={:.3f}'.format(x,b)) e
题目来源:https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=3&page=show_problem&problem=36 The 3n + 1 problem Background Problems in Computer Science are often classified as belonging to a certain class of problem