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Engineering
General Engineering
Simple(?) parabolic dish design question
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[QUOTE="theycallmevirgo, post: 6585544, member: 661852"] [B]TL;DR Summary:[/B] Not feeling too good, slowing me down a bit :). I want to use this to design a parabolic (optical) mirror; [ATTACH type="full" alt="Capture.GIF"]295283[/ATTACH] The problem is that in my application I need both D and f to be a parameter, but I need to specify f only as a perpendicular distance from D. In other words, I need to specify some f_2=f-d, and calculate d. I can't seem to come up with a way to do this without self-reference. Thanks so much Joe ETA N/M it just took me an extra second. I'll post the solution shortly ETA II Nope, sorry, still self reference problems. It's so annoying cause it seems so simple :/ ETA III Maple CAS says it's [ATTACH type="full" alt="Capture.GIF"]295286[/ATTACH] (where f=f_2)but I'll be durned if I know how it got there. [/QUOTE]
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Engineering
General Engineering
Simple(?) parabolic dish design question
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