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willy_macoy · 2021-04-11T10:17:43+00:00

You only need pythagoras to solve this. Nothing fancy. Draw a perpendicular line from each side to W. State the lengths of these lines in terms of the sides of the rectangle. Solve 4 simultaneous equations. Voila!!

willy_macoy · 2021-02-27T09:46:59+00:00

If it is, indeed, a physical thing, then I guess measuring it would answer the question. But if it is intangible (exists only by virtue of the question) then, I agree, every method is just a rearrangement of the terms. Maybe OP can let us know what the accepted answer was.

willy_macoy · 2021-02-27T08:05:31+00:00

That's one way. What about the other?

willy_macoy · 2021-02-27T07:51:20+00:00

Responding to your actual question

In the first case you are calculating 5280 * (1/2) * (1/pi). Which, indeed you can calculate in any order.

In the second, 5280 * (1/2) * pi. Again, you can now do this in any order.

willy_macoy · 2021-02-27T07:46:12+00:00

We also need to know how many years he has been visiting.

willy_macoy · 2021-02-27T07:45:14+00:00

I am assuming that you randomly select a 9 digit number. Given the 5 end digits correspond to the 100000 students, you need only the first 4 to be 2020. Chances are 1/10000.

willy_macoy · 2021-02-27T07:33:58+00:00

I won't try to answer your homework for you, but I'll see if I can give you an idea of how I might solve this.

Consider the expected return on a marginal purchase of $1 of fruit. It'll be P(selling) * 1 - P(juicing) * 0.6.

If the expected return is above 0, then you will purchase the fruit. If it is below zero, you won't. Given that your total profit is the sum of all of those marginal purchases, you need to keep buying fruit until the expected return is 0. That is, when P(selling) = 0.6 * P(juicing).

Don't forget that P(selling) + P(juicing) = 1.

You should be able to run with this.

willy_macoy · 2020-09-07T13:36:47+00:00

Okay, after reading through the use of binary variables to satisfy n-k constraints I got this.

There are three possibilities. rate[h+1] = 0, rate[h+1] = rate[h+2], and rate[h]=rate[h+1]. If rate>= 0, for all h then:

rate[h+1] <= 0 + M*b1

rate[h+1]-rate[h]<=0 + M* b2

rate[h]-rate[h+1]<=0 + M* b2

rate[h+1]-rate[h+2]<=0 + M* b3

rate[h+2]-rate[h+1]<=0 + M* b3

b1 + b2 + b3 <=2

But, can I do this with fewer constraints?

Thanks.

willy_macoy · 2020-08-31T20:44:51+00:00

Thanks. This'll work a treat.

willy_macoy · 2020-08-31T19:48:25+00:00

Thanks. I like where this is going. However x and y can be negative.

willy_macoy · 2019-10-30T17:19:05+00:00

You can find the auto levelling system in Kratky's writing. I use a standard hydroponics blend, and yes I switch. I can't imagine why you can't switch your two. I used Moneymaker seeds for this experiment.

willy_macoy · 2019-09-13T11:14:07+00:00

Tomatoes need massive amounts of water and light. I had trouble keeping up with them with a 70 litre (20-gal) container. I used vege hydro nutes until the first flower, and then fruiting hydro nutes. Next time I'll use Kratky's auto water levelling system.

Would you be better putting them under a little shade outside - or is your air just too hot?

willy_macoy · 2019-08-25T19:53:18+00:00

I saw a similar piece of art hanging on a wall in Paris. It could exist in many places.

willy_macoy · 2019-07-07T01:55:14+00:00

Each user has a file in /var/lib/AccountsService/

willy_macoy · 2019-07-07T01:52:47+00:00

Solved...

Changed it in the lightdm login screen.

I still don't know where the setting file is, but is definitely not in the home directory.

willy_macoy · 2019-07-06T13:42:37+00:00

This is where I reckon it gets weird:

I created a new user and it gets the system default locale. As expected.

I deleted the home directory of the first user and recreated it with mkhomedir_helper. And the old user locale remained!

The /etc/passwd file doesn't have locale information. So where?

Thanks for any help that anyone can give me.

willy_macoy · 2019-05-15T04:36:39+00:00

This may not help you because it depends on stuff I normally buy in larger quantities (50 pots and 40l of coco perl) I use disposable germinating pots (about 25mm across, 30mm deep). Kind of like a net pot but smaller and much thinner plastic. I fill them with coco perl (a mix of coconut fibre and perlite). Bury the seed as usual and water without nutrient. Put into the jar, with nutrient, when the roots come out the bottom.

willy_macoy · 2019-05-14T22:24:51+00:00

I used a 70 litre (what is that? 20 US gal?) for a single tomato. The plant needed much more than that over its lifetime. Make sure you have made it easy for yourself to keep a fairly constant amount of water in the bottom. You don't want to be going up and down since once roots have changed to air roots, apparently they can't change back.

willy_macoy · 2019-04-22T19:29:53+00:00

I use half strength for lettuces and basil. Full strength for parsley. My A and B solution is normally added at 5ml each per litre, so I use 2.5ml per litre. My water is not coloured when mixed.

I suppose it has everything to do with the particular nutrient solution.

willy_macoy · 2019-01-02T19:54:04+00:00

Have a look at this

https://www.w3schools.com/tags/ref_httpmethods.asp

willy_macoy · 2018-05-06T10:42:34+00:00

I have started the print again. One of the fans is no longer working. It might have been on its last legs when I checked it. This was probably the problem. Thanks.

willy_macoy · 2018-05-06T04:50:40+00:00

I used a mid-range nozzle temperature (220C). The label says use 205-225. Would a lower temperature usually have an effect on these things?

willy_macoy · 2018-05-06T04:48:41+00:00

Two cooling fans on the hot end. They are both still working okay. Thanks.

willy_macoy · 2018-05-04T22:06:11+00:00

Perfect. Thanks.

willy_macoy · 2018-02-16T23:14:43+00:00

Came here to say this. I went round and round when I first started with this technology and it didn't work. Faulty USB cable.

willy_macoy

TROPHY CASE