Math geeks, unite!

dezeriaeabout 12 years ago

Okay, so I'm failing hard, and people on my Skype are also failing hard, so someone smart please help me.

Thing what needs to be solved:

x=2^(4-x/100)

The whole thing "to the power of" after the 2.

I know the solution (yay for the internet), but I want a solution using only algebra, so no functions, no differentiation or else.

Thanks if anybody can help me with this!

dezeriaeabout 12 years ago
Josh/Eris solved the problem, thank you again:)
deleteddeletedabout 12 years ago
We have so much in common!!! We should be besties
b0otyabout 12 years ago
i wish u were taller too
deleteddeletedabout 12 years ago
I wish I was a little bit taller
Clairabout 12 years ago
i wish i was still a math nerd
Clairabout 12 years ago
Shivv
dezeriae
You can use logs, the point is, don't use more advanced math than high school, and do it under maximum 15 minutes.

This is part of a 1 hour math test for high schoolers, and I fail to understand how they expect them to solve it on their level, under limited amount of time. O.o
They can just trial and error it. It isn't hard.
lol
deleteddeletedabout 12 years ago
dezeriae
You can use logs, the point is, don't use more advanced math than high school, and do it under maximum 15 minutes.

This is part of a 1 hour math test for high schoolers, and I fail to understand how they expect them to solve it on their level, under limited amount of time. O.o
They can just trial and error it. It isn't hard.
rvppabout 12 years ago
using logs is taught in high schools though..
deleteddeletedabout 12 years ago
There is no closed-form solution for x*logx =n, which is what this problem breaks down to. PETA is right. Algebra won't cut it
Edarkabout 12 years ago
or I can keep not being a huge nerd lul
Edarkabout 12 years ago
like smth along the lines to get the 2^x in the left line and remove the 2^ for both n ***, man I need to freshen up on my math knowledge
Edarkabout 12 years ago
I think this is a pretty easy question, I just forgot how to math
dezeriaeabout 12 years ago
You can use logs, the point is, don't use more advanced math than high school, and do it under maximum 15 minutes.

This is part of a 1 hour math test for high schoolers, and I fail to understand how they expect them to solve it on their level, under limited amount of time. O.o
ratabout 12 years agoedited
Peta
AdrenalineMime
impossible 2 solve using algebra alone
Why is the correct answer being downvoted.

How did you come up with this equation? If you try to solve it algebraically, you'll end up with x both in a base and an exponent. Have fun solving that.
Jalebabout 12 years ago
dezeriae
I don't understand the confusion, but again:



Also, this is not homework:)
Ew... This is why I don't look to apply this subject.
deleteddeletedabout 12 years ago
wait, I messed up transcribing it, the 1/100 is actually a 2^(1/100) or just ~1.0007
deleteddeletedabout 12 years ago
This is as close as I can get without logs

X(1/100)^x = 16
b0otyabout 12 years ago
gggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg
deleteddeletedabout 12 years agoedited
you ruined everything dezeriae i hope you fail your class
deleteddeletedabout 12 years agoedited
oh *** you can't delete posts in this thread. i made a mistake.
b0otyabout 12 years ago
I'm really good at math
Petaabout 12 years ago
AdrenalineMime
impossible 2 solve using algebra alone
dezeriaeabout 12 years ago
Jen, it's the same, I just divided by 64 (2^6).
AdrenalineMimeabout 12 years ago
impossible 2 solve using algebra alone
dezeriaeabout 12 years ago
I don't understand the confusion, but again:



Also, this is not homework:)