Q1))

x = randperm(35);
y = x;
for i = 1:length(x)
   if x(i)<6
      y(i)=2;
   else x(i)<20
      y(i)=x(i)-4;
   else x(i)<=35
      y(i) = 36-x(i);
   end
end


x = randperm(35);
y = 2 * (x<6);
y = y + ((x>=6)&(x<20)).*(x-4);
y = y + ((x>=20&(x<=35)).*(36-x);

-------------------------------------------------
Q2))
x = 1:10
x = [1 2 3 4 5 6 7 8 9 10]

y = [3 1 5 6 8 2 9 4 7 0]

1)  (x>3)&(x<8)  
[0 0 0 1 1 1 1 1 1 1] & [1 1 1 1 1 1 1 0 0 0]  
[0 0 0 1 1 1 1 0 0 0]

2) x(x>5)
   x([0 0 0 0 0 1 1 1 1 1])= [6 7 8 9 10]


Example: W = [1 5 -2 4 8 -3 0 1 7]
         W(W>=0)= [1 5 4 8 0 1 7]
3) y(x<=4)
   y([1 1 1 1 0 0 0 0 0 0]) = [3 1 5 6]

4) x((x<2)|(x>=8))
   x([1 0 0 0 0 0 0 0 0 0]|[0 0 0 0 0 0 0 1 1 1])
   x([1 0 0 0 0 0 0 1 1 1])
   [1 8 9 10 ] 

5) y((x<2)|(x>=8))
   y([1 0 0 0 0 0 0 1 1 1])
   [3 4 7 0]

6) x(y<0)
   x([0 0 0 0 0 0 0 0 0 0])
   []

------------------------------------------------------
Q3)
    x=-1   y=500
    x=5    y=4*5=20
    x=30   y=10*30=300
    x=100  y=500

------------------------------------------------------
Q4)
  T = input('Enter a value for T: ');
  if((T>0)&(T<100))
      h = T-10;
  else if (T>100)
      h = 0.45*T+900;
  end

----------------------------------------------------

Q5)
1)  sum(x)
2)  y=[0 0 0 0 0 0];
    s=0;
    for i = 1:length(x)
      s = s +x(i);
      y(i)=s;
    end
3) sin(x)

---------------------------------------------------------

Q6) 

C = X.*Y;
sum(C);

s=0;
for i=1:3
  C(i) = X(i)*Y(i);
  s = s + C(i);
end




D = X./(2+X+Y);


for i=1:3
  D(i) = X(i)/(2+X(i)+Y(i));
end


----------------------------------------------------
Q7)

1) x+y = [3 5 13]
2) x'+y   error
3) A-[x' y']  error
4) [x;y']    error
5) [x;y] = [1 4 8; 2 1 5]
6) A-3 = [0 -2 3; 2 -1 4]