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an error in Figure 8-8(Knot Multiplicity of NURBS)of The Inventor Mentor book?

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  • an error in Figure 8-8(Knot Multiplicity of NURBS)of The Inventor Mentor book?

    Don't know where it is the proper place to post this question,but can't find a better one.

    My question is,in Figure 8-8 of The Inventor Mentor book(http://www-evasion.imag.fr/~Francois...l#id11743),the order is 4,the number of knots is 7,according to the formula of "Number of knots = order + number of control points",the number of control points should be (11 -4)=7,but in the figure,there are only SIX control points drawn,is it an error or am I missing something?
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