如何在 MATLAB 上绘制带有变量的向量
How do I graph a vector with a variable on MATLAB
我怎样才能画出像这样的东西 (3x^2+5,4x) ,我通常使用 GeoGebra 来画出它,但我不能把它应该看起来像这样的域 (GeoGebra)
应该这样做:
y = -10:0.1:10;
x = 3 * y.^2 + 5.4 * x;
plot(x, y)
grid on
从图表中,您似乎在水平轴上取 3x²+5,在垂直轴上取 4x,因此:
x = -5.5: 0.01: 5.5;
plot(3*x.^2+5, 4*x, 'r');
%other minor adjustments to match with the graph in your post
grid on; grid minor; %to display grid lines
set(gca, 'XAxisLocation', 'origin'); %setting x-axis location to 'origin'
legend('eq2'); %to display the legend
给出:
我怎样才能画出像这样的东西 (3x^2+5,4x) ,我通常使用 GeoGebra 来画出它,但我不能把它应该看起来像这样的域 (GeoGebra)
应该这样做:
y = -10:0.1:10;
x = 3 * y.^2 + 5.4 * x;
plot(x, y)
grid on
从图表中,您似乎在水平轴上取 3x²+5,在垂直轴上取 4x,因此:
x = -5.5: 0.01: 5.5;
plot(3*x.^2+5, 4*x, 'r');
%other minor adjustments to match with the graph in your post
grid on; grid minor; %to display grid lines
set(gca, 'XAxisLocation', 'origin'); %setting x-axis location to 'origin'
legend('eq2'); %to display the legend
给出: