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OCR: (a) 0.0 -0.125 F1 F1 - - (cos = 1 ) ( cos +1 -1) F2 - 2 (sln =1) (sin 21 + 1) F3 - 2 (cos 2 1) ( cos 21 F4 = = (sin (1) ( sin= 1-1) (b) y.1 1.0 0.5 0.25 0.0 x F4 F1 -- - cos + 1) F2 = = (1 + sin " F3 = = (1 + cos - t) F4 == (1 - sin -0) Figure 6: (a) Interpolating TSpline; (b) exterpolating TSpline.