/sci/ - Science & Math » Thread #13740128

15KiB, 451x216, directrix.png

View Same Google iqdb SauceNAO

Anonymous Mon 11 Oct 17:43:38 2021 No.13740128 View Reply Original Report

Quoted By: >>13740141 >>13740868 >>13740925 >>13741540

have you ever used the focus and directrix of a parabola for anything /sci/ ?

Anonymous

Anonymous Mon 11 Oct 2021 17:47:50 No.13740141 Report

Quoted By:

>>13740128
i gave my paraboloid to your mum along the directrix

Anonymous

Anonymous Mon 11 Oct 2021 17:52:00 No.13740153 Report

Quoted By:

focus, yes
directrix, no

Anonymous

Anonymous Mon 11 Oct 2021 22:40:42 No.13740868 Report

Quoted By:

>>13740128
nah, the roots and the vertex have been plenty

Anonymous

View Same Google iqdb SauceNAO Clyde_W._Tombaugh.jpg, 157KiB, 766x1000

Anonymous Mon 11 Oct 2021 22:57:32 No.13740925 Report

Quoted By:

>>13740128
i've ground a few telescope mirrors, so i've used all that conic section stuff in irl.

Anonymous

View Same Google iqdb SauceNAO 6109-07497663en_Masterfile.jpg, 22KiB, 299x450

Anonymous Mon 11 Oct 2021 23:09:13 No.13740978 Report

Quoted By: >>13741583

Professor anon, do we need to know parabolas for the exam?

Anonymous

Anonymous Tue 12 Oct 2021 00:02:42 No.13741124 Report

Quoted By: >>13741145

No, and I wasn't taught these stupid names in my curriculum either. Why invent this shitty name for the stationary point of a quadratic?

Anonymous

Anonymous Tue 12 Oct 2021 00:08:49 No.13741145 Report

Quoted By:

>>13741124
optics is the older field of investigation

Anonymous

Anonymous Tue 12 Oct 2021 01:06:43 No.13741312 Report

Quoted By:

Dipole antennas in RF electrical engineering.

Anonymous

Anonymous Tue 12 Oct 2021 02:31:45 No.13741540 Report

Quoted By:

>>13740128
focus yes, directrix no
i made parabolic reflectors

Anonymous

Anonymous Tue 12 Oct 2021 02:48:39 No.13741583 Report

Quoted By:

>>13740978
No, not for the exam, but you have to write an essay about conics, their properties and applications due on weekend.

Capcode	All Only User Posts Only Moderator Posts Only Admin Posts Only Developer Posts
Show Posts	All Only With Images Only Without Images
Deleted Posts	All Only Deleted Posts Only Non-Deleted Posts
Ghost Posts	All Only Ghost Posts Only Non-Ghost Posts
Post Type	All Only Sticky Threads Only Opening Posts Only Reply Posts
Results	All Grouped By Threads
Order	Latest Posts First Oldest Posts First

Your latest searches