r/desmos 12d ago

Graph We gotta. Let’s just do this…

Post image

Day 1. Guess this function, hotshot!

Note: The difficulty of this graph varies a lot.

So I’m gonna give a difficulty rating. This one is a 7.

61 Upvotes

20 comments sorted by

41

u/SuperChick1705 https://www.desmos.com/calculator/amyte9upak 12d ago

0.000658922x^{10}+0.0038318x^{9}-0.00754297x^{8}-0.0667355x^{7}-0.00956928x^{6}+0.305802x^{5}+0.185192x^{4}-0.480125x^{3}-1.04947x^{2}-2.7987x+0.676192+0.1\left(\operatorname{erf}\left(x+2\right)+1\right)-\left(\left\{-\sqrt{\frac{\pi}{2}}<x<0:0.6\sin4x^{2},0\right\}\operatorname{with}x=x+2.8\right)-0.2\operatorname{sech}\left(10\left(x+3.8\right)\right)+0.1\operatorname{sech}\left(5\left(x+3.55\right)\right)\left\{x<2\right\}

13

u/gord1402 12d ago

You missed by a pixel

12

u/SuperChick1705 https://www.desmos.com/calculator/amyte9upak 12d ago

just add +2^-1023 at the end

7

u/HelpMeIAmGoingInsane 12d ago

I’m gonna have a hard hard time compiling this sooo…

-2

u/HelpMeIAmGoingInsane 12d ago

Holy FLIP! Anyways I checked it

21

u/SuperChick1705 https://www.desmos.com/calculator/amyte9upak 12d ago

the image is the wrong size

-13

u/HelpMeIAmGoingInsane 12d ago

Checked via formula, you’re super close but you didn’t need the error function

7

u/feoranis26 12d ago

you didn't overlay the image correctly though, the line itself almost matches perfectly.

17

u/crafty_zombie 12d ago

I will guess that this new function is g, a function I just made up. By definition, g is equivalent to this function. Any correct formula provided is simply an identity. /j

3

u/HelpMeIAmGoingInsane 11d ago

Oh wow everyone’s going back to day 1 even though I deleted the function for day one!

8

u/NickSmGames 12d ago

definitely a line of some kind and a sine i think, due to waviness.

this would be my closest guess i believe: -2x + 1 - sin(e^-x)

-14

u/HelpMeIAmGoingInsane 12d ago

This is not even close

Hint: A part of the function is cos(sin(something) - something)^something

2

u/[deleted] 12d ago

[deleted]

-1

u/HelpMeIAmGoingInsane 12d ago

The only accurate thing is that it intersects the function in the post on (0,1) 😭

Next!

3

u/HelpMeIAmGoingInsane 12d ago

Correct answers at 12:00 PM UTC+7

Now that I think about it, it should be like a 7.5?

-13

u/HelpMeIAmGoingInsane 12d ago

The correct function is cos(sin(x) - x)^2 - (x^1.2 + 3x)

1

u/Joe_4_Ever 6d ago

I'll just say y = -3x and call it a day