Q7

1. If x= 2 cost - cos2t and y = 2 sin t - sin 2t, find
   dy / dx
   at t=
   π / 4

   Solution

   
2. If x= 3 sint - sin3t and y = 3 cost - cos 3t, find
   dy / dx
   at t=
   π / 3

   Solution

   
3. If x=
   2bt / 1+t²
   and y=
   a(1-t²) / 1+t²
   ,find
   dy / dx
   at t=2

   Solution

   

Solution

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