10x = 0.999β¦ + 9 (true by algebraic manipulation)
No, you haven't shown that, because you haven't shown yet that 9x=9. Welcome to why this doesn't prove anything. You're presuming your result, then using it to "prove" your result.
What we know is that the right hand side is 10 times 0.9999..., so if you want to substitute x=0.99999... into the right hand side, then the right hand side becomes 10x (or 9x+x)... which only shows what we already know - 10x=10x. Welcome to the circularity of what you're trying to achieve. You can't use something you haven't yet proven, to prove something you haven't yet proven.
According to me, talking about the origin of the 0.999β¦
Right. So not according to the meme, which doesn't tell us where the 0.999... comes from. Nor the 1 - could be an integer, floating point, or an estimation. Thanks for playing.
And if you don't then you can no longer claim they are still equal.
you can substitute anywhere
And if you are rearranging algebra you have to do the exact same thing on both sides, always
This isnβt about limits of accuracy
According to who? Where does it say what it's about? It doesn't.
please show me how basic arithmetic can make 0.999
You still haven't shown why you're limiting yourself to basic arithmetic. There isn't anything at all in the meme to indicate it's about basic arithmetic only. It's just some Maths statements with no context given.
then a correct use of the system must be applicable to everything, right?
Different systems for different applications. Sometimes multiple systems for one problem (e.g. proofs).
You shouldnβt need a new system like algebra to be correct, right?
Limits of accuracy isn't algebra.
Version 5 of a software, device, vehicle or such isnβt necessarily better than version 4
Yep, I can attest to that! I used to play Minesweeper Adventure version. Then Microsoft decided to do a complete rewrite and literally ruined the game. It was way slower and way buggier, and on top of that they also lost all my progress. So, well done Microsoft - now instead of seeing more ads (which was undoubtedly why they did the rewrite) I now don't see ANY ads (because the game is just horrible now and not worth playing anymore, even if it didn't have any ads!).
not taught yet
What do you mean not taught yet? There's nothing in the meme to indicate this is a primary school problem. In fact it explicitly has a picture of an adult, so high school Maths is absolutely on the table.
There is no method by which basic arithmetic and decimal notation can turn 0.999β¦ into 1.
In high school we teach that they are the same thing. i.e. limits of accuracy, 1 isn't the same thing as 1.000..., but rather 1+/- some limit of accuracy (usually 1/2). Of course in programming it matters if you're talking about an integer 1 or a floating point 1.
If someone uses these systems as they were taught, they will get told theyβre wrong for doing so
The only people I've seen get things wrong is people not using the systems correctly (such as the alleged "proof" in this thread, which broke several rules of Maths and as such didn't prove anything), and it's a teacher's job to point out how to use them correctly.
P.S.
βWe do it like that, therefore, it is rightβ
Yep, Maths teachers do it right. :-)
Youβre just another yank
BWAHAHAHA! I see you still didn't learn to check facts first. πππ
X times 10 is 10x
10x is 9.9999999....
As I said, they didn't substitute on both sides, only one, thus breaking the rules around rearranging algebra. Anything you do to one side you have to do to the other.
P.S. you proved my point
The only people who think thereβs something wrong with PEMDAS are people who have forgotten one or more rules of Maths.
https://www.youtube.com/watch?v=lLCDca6dYpA
β¦oh wait I remember that
Well, you seem to have forgotten that the woman in that video isn't a Maths teacher, which would explain why she's forgotten the rules of The Distributive Law and Terms.
until you gave up
I didn't give up, you did.
I suggest we donβt do it again but instead, you review the thread
I suggest you check some Maths textbooks, instead of listening to a Physics major.
those systems are giving an incorrect answer
When there's an incorrect answer it's because the user has made a mistake.
Instead of telling those people theyβre wrong
They were wrong, and I told them where they went wrong (did something to one side of the equation and not the other).
Maths teachers are constantly wrong about everything
Very rarely wrong actually.
the abomination that is PEMDAS
The only people who think there's something wrong with PEMDAS are people who have forgotten one or more rules of Maths.
you can prove it with math
Not a proof, just wrong. In the "(substitute 0.9999β¦ = x)" step, it was only done to one side, not both (the left side would've become 9.99999), therefore wrong.
FigmaSharp.Maui.Graphics turns your Figma design into .NET MAUI Graphics code
FigmaSharp.Maui.Graphics turns your Figma design into .NET MAUI Graphics code - jsuarezruiz/figma-to-maui-graphics
FigmaSharp.Maui.Graphics turns your Figma design into .NET MAUI Graphics code
FigmaSharp.Maui.Graphics turns your Figma design into .NET MAUI Graphics code - jsuarezruiz/figma-to-maui-graphics
.NET MAUI Performance Investigations - Jonathon Peppers
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.NET MAUI Performance Investigations - Jonathon Peppers
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In UNDER 10 Minutes - WPF Binding Made Easy! - Nick Cosentino
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New Blazor Hybrid + .NET MAUI Templates are Incredible! Mobile, Desktop, Web all together! - James
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New Blazor Hybrid + .NET MAUI Templates are Incredible! Mobile, Desktop, Web all together! - James
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How To Build Modular WPF Applications With a Plugin Architecture - Nick Cosentino
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Getting Started with C# & .NET in VS Code (Official Beginner Guide) - James
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Getting Started with C# & .NET in VS Code (Official Beginner Guide) - James
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.NET Upgrade Assistant now provides powerful code assessment to help understand potential issues when upgrading your app to modern .NET.
This post is going to walk through using the Microsoft tool, Kiota, to generate client code from a Swagger / OpenAPI definition that can be used within a Windows (WinUI/Windows App Sdk) / Uno Platform application. Ok, so letβs backup a little β firstly, Swagger / OpenAPI (see description) is used to...
Background Media Playback & Lock Screen Controls with MediaElement - Gerald
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Background Media Playback & Lock Screen Controls with MediaElement - Gerald
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Learn how to extend the .NET Upgrade Assistant by providing mappings for your own libraries and packages.
What's up with MAUI and Blazor? Carl and Richard chat with Beth Massi about the latest MAUI, including the new webview available on GitHub that lets you embed a
What's up with MAUI and Blazor? Carl and Richard chat with Beth Massi about the latest MAUI, including the new webview available on GitHub that lets you embed a
What's up with MAUI and Blazor? Carl and Richard chat with Beth Massi about the latest MAUI, including the new webview available on GitHub that lets you embed a
Apparently someone did, and the ensuing chorus of "No, we don't want that!" is being ignored.
You can upvote this comment if you want them to provide a proper setting instead of having to edit the registry.
Enroll in Microsoft Update to automatically receive and install Visual Studio monthly security updates.
Typical Microsoft - just ignored all the people saying "please don't do this".
It's NOT off by default. It's on/off according to the setting you have for "Receive updates for other Microsoft products. Get Microsoft Office and other updates together with Windows updates". If you have that on, then auto VS-updating will ALSO be on. The controversy is no developers want auto-VS updating on, even if they DO have that other setting on. Auto-updating Office and auto-updating VS aren't the same thing at all. I for one never update Windows and VS at the same time, because if something breaks in your app, then how do you know which update broke it if you did them at the same time?
Itβs like going to a mathematics forum and declaring βGuyz I forgot to carry a 1, screw Maths.
You may think you're joking, but as a Maths teacher I can tell you I have seen a lot of posts where someone makes a mistake with their signs, then uses their wrong answer to declare "The rules of Maths are wrong! Look - different answer!". Yeah umm, try working on getting your arithmetic right first before claiming to have "proved" something. π
Personally, I dislike the way the UI is declared and bound though (XAML)
You can write the MAUI UI in C#. No need to use XAML anywhere.