X='-10x^2+8x^2-x^3+4x^5+x^3-10+9-x^7'; P=str2poly(X) Str=poly2str(P)
http://www.codebf.com/read/477111/1364116
x = strmatch('max', strvcat('max', 'minimax', 'maximum'))
http://www.codebf.com/read/477111/1364155
x=rand(1,10); disp(['向量x中的最大值为:' num2str((max(x)))]);
http://www.codebf.com/read/477111/1364174
x=5; z=complex(x);
http://www.codebf.com/read/477111/1364175
x=5; y=10; z=complex(x,y);
http://www.codebf.com/read/477111/1364177
x = (b ~= 0) && (a/b > 1)
http://www.codebf.com/read/477111/1364204
x=[2,3,1,4,5]; h=[2,1,7,4,5,7,2,3]; lenx=length(x); lenh=length(h); N=lenx+lenh-1; xk=fft(x,N); hk=fft(h,N); yk=xk.*hk; y=real(ifft(yk)); plot(y); xlabel('n'); ylabel('y(n)'); title('x(n)*
http://www.codebf.com/read/477111/1364259
http://www.codebf.com/read/476823/1366426
http://www.codebf.com/read/476823/1366429
http://www.codebf.com/read/476823/1366436
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