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/sci/ - Science, Technology, Engineering, and Mathematics

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Calculus help? Anonymous 17/09/28(Thu)18:49 No. 16553 ID: ebea66 [Reply]
16553

File 150661734419.jpg - (3.64MB , 4608x3456 , 20170928_124631.jpg )

Hey guys, quick noob math question if I may.. in the picture i posted you see the equation y-1=(-1/2)(x-(-4))

Its then simplified to 2y -2 = -x-4
And then again to 2y+x+2=0

..my question is could someone breakdown the simplifying into steps? Im not sure the process they used to arrive at their final answer


3 posts omitted. Click Reply to view.
>>
Anonymous 18/01/21(Sun)17:25 No. 16616 ID: 10df8c

>>16553
This isn't even calculus. This is very basic week 1 algebra, and I recommend revisiting it before you attempt "calculus".
The first step was that they distributed the -(1/2) term across the right hand side of the equation and then multiplied the entire equation by 2. Then they simply brought all terms to one side to set the equation equal to zero.


>>
Anonymous 18/04/10(Tue)15:03 No. 16645 ID: f47f1a

>>16553
That picture is upside-down BTW.


>>
re Anonymous 18/06/13(Wed)12:52 No. 16660 ID: 1bb067

Equation of a line if slope (m) and a point (x1,y1) along which line passes is given
Equation is given by -
(y-y1)=m(x-x1)
y-1=-1/2(x-(-4))
2(y-1)=-x-4
2y-2=-x-4
x+2y+2=0




Mycology General Anonymous 18/06/10(Sun)18:49 No. 16656 ID: f38a45 [Reply]
16656

File 152864934687.gif - (540.60KB , 500x355 , 0933d68b7be9c9b55761a57f0f68dcd4c3f9368e0fba6a12b1.gif )

Anyone here interested in mycology?

There's an 8chan board called /fungus/ that's new so I was wondering who here takes it as a legitimate hobby or intellectual pursuit?

Any of you go shroom hunting?


>>
Anonymous 18/06/10(Sun)19:26 No. 16657 ID: 935c27

Sounds like a place that people go to figure out how to find shrooms for tripping on and nothing more.


>>
Anonymous 18/06/11(Mon)05:06 No. 16659 ID: 8eff1f

>>16657
No people also go hunting for edible, nonpsychedelic mushrooms. Mycology is an interesting field of study regardless.




Scottish Researchers Develop ‘Laser-Eyes’ Sophie+Wilson 18/05/17(Thu)13:26 No. 16654 ID: 8e5456 [Reply]
16654

File 152655636832.jpg - (19.12KB , 1170x660 , Laser-Eyes.jpg )

A team of Scottish scientists has developed a type of laser that is thin enough to be integrated into contact lenses.
https://www.evolving-science.com/matter-energy/scottish-researchers-develop-laser-eyes-00659




The ‘Dormio’ Device That Can Help Sleepers Control Their Dreams Sophie+Wilson 18/05/10(Thu)15:18 No. 16653 ID: faf393 [Reply]
16653

File 152595829242.jpg - (13.74KB , 640x353 , Dormio.jpg )

Humans sleep for almost one-third of their lives but until today, have not been able to comprehend or even remember most of their dreams after they have awoken.

https://www.evolving-science.com/information-communication/dormio-device-can-help-sleepers-control-their-dreams-00655




Meteoric Diamonds Probably Came From A Long-Lost Planet Sophie+Wilson 18/04/28(Sat)04:32 No. 16649 ID: c5cfef [Reply]
16649

File 152488275847.jpg - (32.17KB , 1170x660 , Meteoric-Diamonds.jpg )

In 2008, in the Nubian Desert (Sudan), scientists discovered a meteorite with diamonds, surrounded by layers of graphite. This asteroid-turned-meteor that hit the Earth was 4 meters in diameter and came to be known as 2008 TC3. This body was considered as a compelling discovery because it revealed many secrets, dating back to the beginning of our solar system.

https://www.evolving-science.com/space/meteoric-diamonds-probably-came-long-lost-planet-00641




bank account getting drained from hackers Anonymous 17/07/17(Mon)01:09 No. 16526 ID: 030037 [Reply]
16526

File 150024659115.jpg - (32.55KB , 333x360 , serveimage.jpg )

Theoretically, how fucked up would I be if someone used a keylogger on my machine for a few month and leaked my bank account details (online password, PIN, security questions etc) on the Darkweb?

Not worried at all but I just wonder how good these computer hackers are at clearing accounts. Aren't there limits depending on the level of your account? They definitely can get around I.P alerts when accounts are accessed in different countries.


3 posts and 1 image omitted. Click Reply to view.
>>
Anonymous 17/10/29(Sun)14:48 No. 16571 ID: 7087c4

You'd be fine


>>
Anonymous 17/11/06(Mon)19:26 No. 16575 ID: 7b1c18

Hackers prefer to target businesses for large transactions, because they know few people have $100,000 lying around, while a huge number of businesses have access to that much credit.


>>
Anonymous 18/04/15(Sun)20:14 No. 16647 ID: a66c44

There is this new satoshi dice address for BTC.
Address is bc1quykuahxrjx6d3h6ga4rkyg0hl5e59tcthqyhw6.

I found this while scanning pastebin

Here are the instructions on how to verify the provably fair roll.
https://codepen.io/anon/pen/vRqPMr?editors=0012




Amazon’s Wireless Wristbands Can Track Warehouse Workers Sophie+Wilson 18/04/07(Sat)14:49 No. 16642 ID: 92f56e [Reply]
16642

File 152310539335.jpg - (893.78KB , 1170x660 , amazon.jpg )

The global technology market is ever-evolving, and companies have not shied away from implementing them in workplaces. Amazon too has been working to create and patent a wristband system, to keep an eye on their workers in the huge warehouses and optimize the work.
https://www.evolving-science.com/information-communication/amazon-s-wireless-wristbands-can-track-warehouse-workers-00612




Naomi "Sexy Cyborg" Wu is a liar and a fake. Anonymous 18/04/04(Wed)14:46 No. 16638 ID: aeab35 [Reply]
16638

File 15228459614.jpg - (218.01KB , 1400x1050 , C67929040DD3C711CF587E26D68EA5F3.jpg )

More evidence connecting Timaz to Sexy Cyborg Naomi Wu. This pair is using her "fame" to rip people off. They hide behind their army of White Knights and SJW feminists when anyone critiques her bullshit backstory and cry sexism instead of addressing the points made. Now they are trying to ruin people's careers. They are scumbags and the truth needs to be shared.

In this thread, user Timaz talks about his Up Plus 2 and Leapfrog Creatr

https://web.archive.org/web/20180224212900/http://3dprintboard.com/search.php?searchid=3203938

https://imgur.com/DyNZpUm

In this article, Wu talks about the same type of printer

https://web.archive.org/web/20180116013841/https://3dprint.com/185153/spotlight-naomi-wu-sexycyborg/

https://imgur.com/NNhW8yR

She also has it listed on her thingvirse
Message too long. Click here to view the full text.


>>
Anonymous 18/04/04(Wed)20:39 No. 16640 ID: fecce6
16640

File 152286717561.jpg - (1.18MB , 2550x1950 , liars.jpg )




Researchers Turn Fiction Into Fact By Developing Bio-Inspired Invisibility Sophie+Wilson 18/04/04(Wed)16:02 No. 16639 ID: 40a775 [Reply]
16639

File 152285056964.jpg - (441.16KB , 1179x660 , Researchers Turn Fiction Into Fact By Developing B.jpg )

phalopods, the class of marine animals including squids, octopuses and cuttefish, have a specialized mechanism of escaping from their prey or while signaling — camouflage.
https://www.evolving-science.com/matter-energy/researchers-turn-fiction-fact-developing-bio-inspired-invisibility-skin-00609




Hypothetical Question Anonymous 18/03/08(Thu)15:46 No. 16633 ID: 9469d5 [Reply]
16633

File 152052040874.jpg - (23.14KB , 512x384 , IMG_0740.jpg )

If I were to throw a paper air plane from northern Texas would the global winds more likely carry it towards Canada or the east coast?
Thanks


>>
Anonymous 18/03/20(Tue)02:39 No. 16635 ID: 5a2853

If you throw it from a standing position on the ground they will carry it to . . . /me mumbles . . . just a moment while I do some calculation . . . /me mutters . . . Ah, yes, I thought so. To Texas.




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