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【单选题】
下列不是bezier曲线的为()。
A.
P(t)=(1-t)P 0 +tP 1
B.
P(t)=(1-t) 2 P 0 +2t(1-t)P 1 +t 2 P 2
C.
P(t)=(1-t) 3 P 0 -3t 2 (1-t)P 1 +3t(1-t) 2 P 2 +t 3 P 3
D.
P(t)=(1-t) 3 P 0 +3t 2 (1-t)P 1 +3t(1-t) 2 P 2 +t 3 P 3
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