MATLAB: I want to write a small program…

exhaustive search matlab programMATLAB

Please help me to write program for following algorithm
The algorithm for a program is as follows
      Inputs
      a=0; b=5; n=10
      f(x)=x^2+54/x
      Step 1
      x1=a; dx=(b-a)/n; x2=x1+dx; x3=x2+dx;
      Step 2
      if f(x1)>=f(x2)<=f(x3)
      answer is(x1,x3)
      else x1=x2; x2=x3, x3=x2+dx;
      and go to step 3
      Step 3
      check if x3<=b
      if yes go to step 2
      else there is no answer
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