03 Графики в MATLAB_1
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+ 2.
>>x = -2*pi:pi/100:2*pi;
>>y1 = sin(x/2);
>>y2 = cos(x);
>>y3 = exp(cos(x));
>>plot(x,y1,'m:',x,y2,'k--',x,y3,'r-.')
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>>grid on
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.,
Example 1: |
y = x / (x2 -9) |
%Определяем аргумент (массив х) на интервале [-5;3]. >> x = -5:0.03:-3.03;
%Определяем массив у.
>> y = x./(x.*x-9);
%Строим график y(x), черный цвет, сплошная линия >> plot(x,y, 'k-' );
%Блокируем создание нового окна при выполнении команды plot
>> hold on
%Определяем аргумент (массив u) на интервале [-3;3] >> u = -2.97:0.03:2.97;
%Определяем массив v
>> v = u./(u.*u-9);
%Строим график v(x), черный цвет, сплошная линия >> plot(u,v, 'k-' );
%Блокируем создание нового окна при выполнении команды plot
>> hold on
%Определяем аргумент (массив t) на интервале [3;5] >> t = 3.03:0.03:5;
%Определяем массив z
>> z = t./(t.*t-9); |
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% Строим график v(x), черный цвет, сплошная линия |
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>> plot(t,z, 'k-' ); |
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y = x / (x2 -9)
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Example 2: y = tan(x)
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MATLAB
•& grid on
•. title(‘ ’)
•. xlabel(‘ ’), ylabel(‘ ’)
•. legend(‘ 1’, ‘ 2’,…, ‘ n’, k)
n , k
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-1 − # , 0 − #
1 − ( () 2 −
3 −
4 −
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& xlabel, ylabel, title
& MATLAB |
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Example 3: |
y = (x2 + 1) / (x2 - 4)1/2 |
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