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Math parser expression evaluator

Hi Maxy.
I've been looking for a math parser for a long time with these features:

1) The possibility to declare a certain number of variables (1 or more) and to input expressions like that:
2a+b-c^2*6
2) Assign values to a, b, c every time and get the final result
3) No matter to graph functions

Please I want to know if an android app like this already exixts or if it doesn't exist, can some programmer do it also by payment ?

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[ROM]-v9 GamerROM Eclipse Pro™ v1.00 ASUS Zenfone 3 (zenfone3)!

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Welcome to GamerROM Eclipse Pro™ for the Asus Zenfone 3 (zenfone3)!

Official Preview Trailer:

Features:

- New A.I named Victor he will learn your gaming habbits and apply them to every game you play (May take up to 3 days form him to learn your gaming habbits)

- Manage your RAM usage with Boost+ By HTC™

- Full 60fps UI & In-Game with no lag

- Fully supports highest resolution available

- No blocked apps & games so you can play any games with no restrictions such as PUBG or Call of Duty etc

- Block in-app/website ads with AdAway

- Full root integration powered by LineageOS root

- Fast & secured OS to keep you safe while playing online

- Up-to-date security patch updates

- Customize your OS with LSpeed (installed seperately) with Victor being the framework that helps L Speed run smoother

- Play online for free as you connect to GamerROM®Online Gaming Service & much more

Download: https://play.google.com/store/apps/details?id=com.gamerrom.downloader


OS Specifications:

Android Version:
v9

Current Security Patch: January 5, 2020

GamerROM OS Version: v1.00

Android SDK Version: 28

Official Release Date: January 18, 2020

Help Videos keep resuming 5-8 seconds after being paused

Hi all, I got a new phone this month (Umi F2) and its running Android 10. I've gotten used to Umidigi devices coming with a few OS bugs here and there but this one stumps me. Any videos at all (Youtube, Google Files video player, and Chrome embedded player) resume them selves about 5 to 8 seconds after I pause them. 100% of the time too, its not like it happens sometimes, no it happens every time I pause.

Lack of choice of App selection while in Power Saving Mode.

I own a Samsung Galaxy Prime Core.

My problem - When I put the phone in Power Saving Mode, O cannot put any app that I choose in the empty slots. When I depress the + sign to add an app, my choices are limited to maybe 5 apps, not giving me the ability to add my app of choice. I want to insert a phone app, in the event I need to make or answer a call while in that mode.
The instructions in the manual doesn't address this. All it provides are instructions on how to remove or add an app(s). When I depress the + sign it gives me, as mentioned above a choice of 4 or 5 being like calendar, voice recorder, etc. ???

Battery replacement

OK, this phone is going on three to four years old. I plan to replace it when the new phones come out in October of this year.

Meanwhile, and I have been putting up with this for well over a year (my bad), I have issues with the battery or what I think would be the battery. The battery used to last well over 14 hours. By looking at the % left, it appears it will continue to go that long.

But, a strange thing happens daily. Right around 50% left, if you do nothing, it will stay on even in sleep mode. But, doing anything, like turning the screen on, opening an app, going to a site will cause it to die. When you turn it back on, it will show 48% left and do fine. It is even better if you connect it to a charger.

I wonder if I can just deduce that this is a bad battery or if something else is going on. I have watched several YouTube videos on replacing it, and while the steps look easy to follow, it does seem as though a novice could screw it up. I wonder if I should just take it to Verizon to have them look. The problem is I CANNOT afford to be without the phone very long. I have also considered purchasing a refurbished or older model so I have a working one I can use.

Any thoughts?

App Inventor UPC Verification App

First, I have zero experience with app development (great start, I know). I have some basic web development and coding experience from a few years ago but haven't kept up with it. However, I am fairly tech savvy and pick up on things pretty quickly. To save myself time and frustration, I figured tapping into the expertise of the community would be a great place to start.

Here's the background situation. My company does wholesale distribution of food products. We have a grocery store-esque customer that is requiring we provide them with any UPC code we send them ahead of time so they can make sure its in their system so it scans at the register. And we buy products from every imaginable supplier so one week we might have blueberries with one UPC and the next week another.

What I want to do is have a simple app that can be linked to a scanner (either using a device camera or a specific scanning gun) that scan the UPC, checks it against our existing UPCs that we've provided (most preferably stored in a google sheet table), and simply returns either valid if it currently exists in the table or error if it does not.

So, my question is: does anyone know of something similar that exists like this? If not, what are some recommendations on where I should start?

As a beginner, I appreciate any and all comments.

Thanks in advance!

unlocking code - how many times

I have given my 85-year old father a Samsung tablet A 10.1 (2019) as he wanted this. He is new to tablets and a bit scared of codes. He is afraid that he might lock himself out of the tablet. What happens if you keep on trying to get in your tablet with a wrong code? We have the code so not lost of forgotten. I just want to reassure him what would happen if he keeps on typing it in wrong. I have informed him that he can have a word. It's not the number it is what happens if I have tried X many times. I have been using smart phones and a tablet for a long time, but I actually don't know as this would not happen so I never had a reason to think about this. Does anyone know? Just for clarity it is just tehe pincode to unlock the access to the tablet.

  • Poll Poll
[ROM]-v9 GamerROM Eclipse Pro Xiaomi Mi Note 2 (scorpio)

Do you like GRE Pro?...Why not give us a rating!

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Welcome to GamerROM Eclipse Pro™ for the Xiaomi Mi Note 2 (scorpio).

Official Trailer:

Today marks a new journey a new gaming OS arrives to enhance your gaming experience. Live in a next gen OS that will bring gaming into the next era where you can game on the go and not worry about lag or slow downs ever again!

Features:

- New A.I called "Victor" will your gaming usage patterns and apply hardware configurations based on how you use your device.

- Help keep RAM free with Boost+ by HTC™

- Up-to-date security patch updates

- Block ads with AdAway

- Built in root management

- Magisk compatible

- No app blocking this way you can enjoy any app even PUBG without any problems

- Fast & secured OS and much more


OS Specifications:

Android Version: v9

Android SDK: 28


Current Security Patch: January 5, 2020

OS Official Release Date: January 17, 2020

Download: https://play.google.com/store/apps/details?id=com.gamerrom.downloader

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