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>> a1=sin(x);
>> a2=sin(x+1);
>> a3=sin(x+2);
>> a4=sin(x+3);
>> plot(x,a1,x,a2,x,a3,x,a4)

>>h=plot(x([1:500:end]),a1([1:500:end]),'og',x([1:500:end]),a2([1:500:end]),'xb',x([1:500:end]),a3([1:500:end]),'vr',x([1:500:end]),a4([1:500:end]),'sk')
>>legend(h,'sin(x)','sin(x+1)','sin(x+2)','sin(x+3)')
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[ Last edited by mink on 2008-5-28 at 14:04 ]
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plot(b(1,,b(2,,'g',b(1,[1:500:end]),b(2,[1:500:end]),'bx')

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[ Last edited by mink on 2008-5-27 at 20:00 ]
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