Due date for Assignment #3 is now Thursday, April 4

• Hints for Assignment #3:
  Problem 1: Use the linear system method or the Lagrange method to find the interpolating polynomial. Do not use the Matlab function polyfit.
  Use plot(x,y,'o',t,yp,t,yf) to plot the given points together with the interpolating curve and the function f . Note that you can put several plots on one page.
  Problem 2: Use spline twice: First to get xx from the given t and x-values, then to get yy from the given t and y-values. Use plot(x,y,'o',xx,yy); axis square to plot your 9 points together with the interpolating curve.
  Problem 3: Do not use the Matlab function polyfit. Use plot(t,q,'o',tt,qq) to plot the given points together with the least squares curve (the vectors t, q contain the coordinates of the given points, the vectors tt, qq contain the coordinates of the points on the fitted curve).