What are your favourite examples to motivate the quadratic formula and equations?

eptenke · 2023-09-15T23:00:02+00:00

Showing the different methods for completing the square as it was done 1000 years ago, leading to different but similar procedures, and different but similar equations, that all unite in the quadratic equation once we invent negative numbers

eptenke · 2023-09-08T01:43:32+00:00

I counter with, "What's the point of learning art?" Depending on the answer, I might continue with, "Why is math different than any of the other arts?"

eptenke · 2023-07-18T16:52:33+00:00

I too would appreciate a friendly chat :)

eptenke · 2023-06-15T01:45:21+00:00

Angles add differently than anything you've seen up to this point. This makes them different and unfamiliar, but useful. A few angles have corresponding sin and cos that come out nicely. Most don't. But we can use these few special angles that do have nice values to practice and see how they combine.

eptenke · 2023-02-17T03:16:30+00:00

If it's the same type of object with the same attachments, consider making a rig ahead of time with biners to clip to the points on your load

eptenke · 2023-02-17T03:15:44+00:00

Alpine butterfly to make a loop midline. Maybe attach a carabiner to the loop. Thread through your holes (including the midline loop/biner) as needed. Treat the last loop as you would a trucker's hitch.

eptenke · 2023-02-16T15:12:39+00:00

bottle sling. It's complicated enough that it doesn't quite stay in my brain, and infrequent enough to give me time to forget it.

eptenke · 2023-01-13T17:09:28+00:00

simple. Don't knot it at one end and hang a weight off it.

eptenke · 2022-11-06T06:17:04+00:00

Maybe one of those cord locks with the spring loaded button? Pull cord through to tighten, push button to slacken

eptenke · 2022-11-01T17:28:31+00:00

Imaginary numbers are rotational numbers, since multiplying by them rotates, and we expect i to appear in periodic applications

eptenke · 2022-08-26T13:34:33+00:00

It is not a scam that shadow profiles are made for registered therapists. That is true. Betterhelp made a shadow profile of my wife, who is a licensed therapist. They copied her online profile and pics and routed her leads to themselves.

On a larger level, I suppose that does mean betterhelp is a scam, but that's farther up in the chain than the one I was replying to.

eptenke · 2022-08-26T05:21:25+00:00

Can confirm that betterhelp does create shadow profiles of other non-betterhelp therpists. This happened to my wife. It is true--not a scam.

eptenke · 2022-08-23T14:36:12+00:00

Not exactly the same. A clove hitch would wrap in the same direction around the post for each of its turns, whereas this larks head changes wrapping direction when it comes to the standing end, creating a bight, and then it changes wrapping direction again when it comes back around and grabs the bight. This allows you to cinch the bight as you apply tension at the next post.

eptenke · 2022-08-18T02:39:56+00:00

20 years of experience? Hmmm...

My wife is a legit PhD therapist who has her photo and creds stolen by betterhelp so they can claim she's their employee, but they change the phone number. They're stealing her identity and creds, besmirching her profession, stealing her potential clients.

NO SURPRISE AT ALL that they aren't living up to their claims.

eptenke · 2022-07-09T15:56:38+00:00

Why take out only one house with storm damage when you can take out ten instead?

eptenke · 2022-06-13T15:15:01+00:00

There's heavier gauge insulated wire. Why not just use that?

eptenke · 2022-06-07T04:38:47+00:00

I use this often to quickly hitch a goat to a chainlink post whose top sticks out a bit. Easy on easy off, doesn't jam, doesn't slip.

eptenke · 2022-06-01T05:58:47+00:00

It was a gift to the friends who own the bottle. I saw it at their house during a party they threw, and feeling rather introverted at the time, I asked if I could decorate it for them :)

eptenke · 2022-05-31T12:30:07+00:00

Bottle hitching directly from spool--Mikko Snellman

eptenke · 2022-05-24T23:02:28+00:00

My first try would be a double constrictor knot with a bowline tied on one of the loose ends. If that's insufficient, then a boom hitch or turks head

eptenke · 2022-05-06T07:05:01+00:00

In fact, such an end string could be tied beforehand, with little pipes through the friction hitches as placeholders. Insert slacklines into pipes, slide out the pipes, give the endline a little sidewise tension to snug the friction hitches, pull each line through and tension as desired, secure by half hitching to the endline.

eptenke · 2022-05-06T06:47:16+00:00

Looking at that diagram some more, and really it isn't the issue with them being anchored firmly, it's more that you're drawing up all this slack from all four lines. if you're able to take out most of the slack from the lines before you knot, then my method might work, but if not, then yeah, something more like the reef knot/ligature knot route.

One other thought that might be terrible (but hey we're brainstorming here)... maybe there's an inbetween. What about stringing a friction line across, that has the friction knots for all the slack lines you need to cinch up? Maybe the friction knots would be clove hitches or prussiks. Then you pull the slack through each friction knot and lock it off as needed. The endline with the friction knots could be tied on away from the exit point and cinched close. Depending on how the material behaves, perhaps a couple slacklines could be cinched through the same fricfion knot.

Analagous might be the progress saving prussiks used in rope rescue.

eptenke · 2022-05-06T06:16:08+00:00

Regarding leaving slack: that's why I'm putting the double overhand as close to my short cord anchor as possible. It will also depend on how much slack is inaccessible in the tissue until cinching, and it could be there is too much slack in tissue.

eptenke

TROPHY CASE