函数y=sin(1/x)曲线

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该曲线在x趋近于零时振荡很剧烈,在远离零点时振荡越来越平缓. 图线: 代码: <!DOCTYPE html> <html lang="utf-8"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <head> <title>绘制曲线y=Sin(1/x)</title> </hea…

由函数$y=\sin x$的图像伸缩变换为函数$y=\sin(\omega x)$的图像(交互式)

可以拖动滑动条$\omega$显示动态效果…

绘制函数 y=x^2-2x-3/2x^2+2x+1 的曲线

代码: <!DOCTYPE html> <html lang="utf-8"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <head> <title>函数x^2-2x-3/2x^2+2x+1曲线勾画</title> </head> <body onload=&qu…

在笛卡尔坐标系上描绘函数 y=4x^2-2/4x-3

代码: <!DOCTYPE html> <html lang="utf-8"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <head> <title>函数4x^2-2/4x-3曲线勾画</title> </head> <body onload="draw…

[再寄小读者之数学篇](2014-11-19 $\sin(x+y)=\sin x\cos y+\cos x\sin y$)

$$\bex \sin(x+y)=\sin x\cos y+\cos x\sin y. \eex$$ Ref. [Proof Without Words: Sine Sum Identity, The College Mathematics Journal].…

我们使用一个三层的小网络来,模拟函数y = x^3+b函数 import tensorflow as tf import numpy as np import matplotlib.pyplot as plt #训练数据 x_data = np.linspace(-6.0,6.0,30)[:,np.newaxis] y_data = np.power(x_data,3) + 0.7 #验证数据 t_data = np.linspace(-20.0,20.0,40)[:,np.newaxis] t…

PSO：利用PSO+ω参数实现对一元函数y = sin(10pix) ./ x进行求解优化，找到最优个体适应度—Jason niu

x = 1:0.01:2; y = sin(10*pi*x) ./ x; figure plot(x, y) title('绘制目标函数曲线图—Jason niu'); hold on c1 = 1.49445; c2 = 1.49445; maxgen = 50; sizepop = 10; Vmax = 0.5; Vmin = -0.5; popmax = 2; popmin = 1; ws = 0.9; we = 0.4; for i = 1:sizepop pop(i,:) = (ran…