how to plot in matlab
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Hi, how can I plot 3cos3x + 3sin3x in matlab?
thanks!
1 个评论
Walter Roberson
2020-2-8
First write the expression in MATLAB syntax. MATLAB syntax does not have any implicit multiplication, and invocation of functions is always of the form FunctionName(parameter)
Once you have the expression in MATLAB syntax, enclose it in quotation marks, and pass that to fplot()
For example,
fplot('7+x^2')
回答（1 个）
Image Analyst
2020-2-8
Try this:
x = linspace(-2*pi, 2*pi, 1000);
y = 3 * cos(3 * x) + 3 * sin(3 * x);
plot(x, y, 'b-', 'LineWidth', 2);
grid on;
fontSize = 24;
xlabel('x', 'FontSize', fontSize);
ylabel('y', 'FontSize', fontSize);
title('y = 3 * cos(3 * x) + 3 * sin(3 * x)', 'FontSize', fontSize);
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2020-2-8
2020-2-8
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