3. Plot the function x+1 f(r) = 1+ 12r² * in the interval -1 SIS 1. Then fit a line (o = co + Cir) to it in the mentioned interval and show the line in your plot. Comment what happens if you try to fit a second degree polynomial (ó = co+cr+c2x*) to it based on what we have discussed in the class, i.e. instead of base functions 1, r, and r what would you choose.

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