Funny: Home of the Haha @lemmy.world Centurion @lemmy.world 2 mo. ago

It could have been so easy

40 comments

There's 3 variables and 1 equation. This is unsolvable.
- Since we're just making shit up anyway
  
  Assume k=0 and n is the last natural number. Solved.
- You can reform the term until it reads x =
  
  arcsin(nk-1) ?
- It's called a literal equation. The problem doesn't state which variable to solve for, but the assumption here is that it is x. Solving literal equations is a basic part of mathematics courses.
  
  I'm a mathematician and I can't recall a time I've ever heard the term "literal equation." When I was in grade school the instructions were always "solve for x" if x was the variable being solved for.
Permanently Deleted
- i’m guessing they want you to solve for x by rearranging and then taking arcsin
  
  Considering the handwriting, it's probably all written by the same person. But even if it wasn't, it is very badly written if you had to solve it by making assumptions, imo.
- Well the "student" and "grader" use the exact same pen and writing style...
Grading your own work is stupid.
Would only work if the numerator was 𝑛 + sin 𝑥
- That's for AP. Elementary logic let's you divide willy nilly
I cannot actually believe that back in the day, I understood what these were.
- so you don't understand sin anymore? or division?
  
  I don't sin anymore.
  
  I haven't had to do anything with sin, cos or tan in over 20 years and even back then it's a miracle I managed to pass my advanced math course considering I never understood what they were because it was so badly explained to us...
How fake do you want it?

Yes
WTF bro, There is 3 variables.

Wait? NVM Wait?

Today I did Calculus for 6 hour straight. So, don't mind me I am just tired.
There's a teacher with no sense of humour
- There's no teacher. Everything on that paper was most likely written by a single person.
  
  All the "s"s do look very similar.
  
  Source: I am the world's foremost forensic handwriting expert
  
  The ink does have a different color
  
  How do you know
x = arcsin (kn - 1)

I've solved it. There you go. I hope you use this solution for something good.
- It was already solved. For k.
K, but unless information isn’t shown regarding n this is unsolvable.
Solve for 1:

1 = kn - sin x
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In regards to x, x=arcsin(kn+1), where kn is between -2 and 0

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