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In the B-spline curve, which knot vector classification has the same shape (when plotting on the graph) for each blending function?
a) Uniform                          
b) Open uniform
c) Non uniform   
d) Classic uniform

a

Which of these is a correct equation for finding parametric first-order derivatives at the first endpoint in bezier curves?
a)
𝓅ˊ(0) = −𝓃𝓅0 + 𝓃𝓅1                                 
b) 𝓅ˊ(0) = −𝓃𝓅1 + 𝓃𝓅2
c) 𝓅ˊ(0) = −𝓃𝓅n-1 + 𝓃𝓅n                                
d) 𝓅ˊ(0) = −𝓃𝓅n + 𝓃𝓅n+1

a