# Mathematical sbi contest #6

in #puzzle3 years ago (edited)

Here you can keep your brain fit by solving math related problems and also earn SBI by doing so.
The problems usually contain a mathematical equation that in my opinion is fun to solve or has an interesting solution.
I will also only choose problems that can be solved without additional tools, so don't grab your calculator, you won't need it.
↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓

# Rules

#### And one more thing: I only want integer solutions!

↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓

# Problem

The solution of this equation is simple, but it isn't as simple to get there.
↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓

You can take a look at the results of the last contest here. There you can also find out how I evaluate your entries.

To everyone who already participated in a past contest, come back today and try a new problem(tell me if you don't want to be tagged):
@addax @ajayyy @bwar @contrabourdon @heraclio @hokkaido @mytechtrail @sidekickmatt @sparkesy43 @tonimontana @vote-transfer

In case no one gets a result(which I doubt), I will give away the 1 SBI to anyone who comments.

This contest is over. You can find the results here

Sort:

x,y=-x
x,y=x+1

Congratulations @quantumdeveloper! You have completed the following achievement on the Steem blockchain and have been rewarded with new badge(s) :

 You got more than 700 replies. Your next target is to reach 800 replies.

You can view your badges on your Steem Board and compare to others on the Steem Ranking
If you no longer want to receive notifications, reply to this comment with the word `STOP`

You can upvote this notification to help all Steem users. Learn how here!

So busy I keep missing these.

These are the products of two consecutive integers.

x.(x+1)=(y-1).y

so works for all y=x+1, where x, y integers. Even works for negative integers.

One special solution is x=y=0

As you can see in my result post, I will reduce the frequency of my posting, so you should be able to find them more easily when looking at my account every weekend. Write it into your calender, if that helps :D

Let's go with x = 3, y = 4

Posted using Partiko Android

x = 1, y = 2
!giphy homer+simpson+thinking

Posted using Partiko iOS

// You can support giphy by using one of your witness votes on untersatz! //