(A) simple parabola (X)
(B) cubic parabola ()
(C) spiral (X)
(D) lemniscate (X)
Answers: Which of the following shapes is preferred in a valley curve cubic parabola.
(A) simple parabola (X)
(B) cubic parabola ()
(C) spiral (X)
(D) lemniscate (X)
Answers: Which of the following shapes is preferred in a valley curve cubic parabola.
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