MATLAB: How to do plotting polynomial( 2x^-2+1) this x with power of -1 . how to do in mathlab

polynomial

theQ is plotting polynomial for x with power of -1

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syms x
%x with power -1 
fplot(2*x^(-1)+1)

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MATLAB: -1 and 1 matrix

Method One:

>> N = 5;
>> 2*mod(ndgrid(1:N,1:N),2)-1
ans =
   1     1     1     1     1
  -1    -1    -1    -1    -1
   1     1     1     1     1
  -1    -1    -1    -1    -1
   1     1     1     1     1

Method Two:

>> 2*(ones(N,1)*mod(1:N,2)).'-1
ans =
   1     1     1     1     1
  -1    -1    -1    -1    -1
   1     1     1     1     1
  -1    -1    -1    -1    -1
   1     1     1     1     1

Method Three:

>> repmat(2*mod(1:N,2).'-1,1,N)
ans =
   1     1     1     1     1
  -1    -1    -1    -1    -1
   1     1     1     1     1
  -1    -1    -1    -1    -1
   1     1     1     1     1

MATLAB: Plot +1 +1 -1 -1 rectangular pulse

Previously the pattern was repeating after every 2 occasions (+1 -1)(+1 -1). So, you used rem function with respect to 2. Now the pattern has to repeat after every 4 occasions (+1 +1 -1 -1)(+1 +1 -1 -1). So, let us use rem function with respect to 4. I think the changes as done below will suffice your requirement.

for m = 0:Npulses
  if  rem(m,4) == 0 | rem(m,4) == 1  %1st and 2nd term
        Tx1 = exp(1j*pi*gamma*(t-m*PRI).^2);
        W=ones(size(t));
        W(t<m*PRI)=0; 
        W(t>(m*PRI+tau))=0; 
        s1 = Tx1.*W+s1;
      else
          Tx2 = -exp(1j*pi*gamma*(t-m*PRI).^2);
          W=ones(size(t));
          W(t<m*PRI)=0;
          W(t>(m*PRI+tau))=0;
          s1 = Tx2.*W+s1;
      end
end

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Related Solutions

MATLAB: -1 and 1 matrix

MATLAB: Plot +1 +1 -1 -1 rectangular pulse

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