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・ Bullfrog International
・ Bullet to the Head
・ Bullet train
・ Bullet Train (band)
・ Bullet Train (song)
・ Bullet Train for Australia
・ Bullet Train to Vegas
・ Bullet Treatment
・ Bullet Tree Falls
・ Bullet tuna
・ Bullet Union
・ Bullet voting
・ Bullet Witch
・ Bullet with Butterfly Wings
・ Bullet, Switzerland
Bullet-nose curve
・ Bullet-Proof Software
・ Bullet-shooting crossbow
・ BulletBoys
・ BulletBoys (album)
・ Bulleteer
・ Bulletface
・ Bullethead (band)
・ Bulletin
・ Bulletin board
・ Bulletin Board (album)
・ Bulletin board (disambiguation)
・ Bulletin board system
・ Bulletin Building
・ Bulletin d'expédition


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Bullet-nose curve : ウィキペディア英語版
Bullet-nose curve

In mathematics, a bullet-nose curve is a unicursal quartic curve with three inflection points, given by the equation
:a^2y^2-b^2x^2=x^2y^2 \,
The bullet curve has three double points in the real projective plane, at x=0 and y=0, x=0 and z=0, and y=0 and z=0, and is therefore a unicursal (rational) curve of genus zero.
If
:f(z) = \sum_^ z^ = z+2z^3+6z^5+20z^7+\cdots
then
:y = f\left(\frac\right)\pm 2b\
are the two branches of the bullet curve at the origin.
==References==

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抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Bullet-nose curve」の詳細全文を読む



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