how to plot this function?
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采纳的回答
Here is one way:
x = linspace(-pi, pi, 1000);
f = zeros(1, length(x));
f(abs(x) <= pi/2) = 1;
plot(x, f, 'b-', 'LineWidth', 2)
ylabel('f');
xlabel('x');
grid on;
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更多回答（1 个）
f = @(x) abs(x)<=pi/2;
x = linspace(-pi,pi,200);
plot(x,f(x))
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