Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

Login

Username

Password

Not registered yet?

#1 2012-12-31 18:29:46

julianthemath
Super Member

Online

Logarithm game!

If you don't know logarithms yet, please go here: http://www.mathsisfun.com/algebra/logarithms.html
Okay! Questions!
Fill in the blank.
1) log4(___)=3
2) log2(81)=__

Last edited by julianthemath (2012-12-31 18:31:15)


Buy 1 smile for $1, sad for $0.50, big_smile for $3, tongue for $2.50, up for $1.25, down for $0.25, and roflol for $5.
Come on, buy a smiley!
 

#2 2012-12-31 21:16:16

Agnishom
Super Member

Offline

Re: Logarithm game!


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'The whole person changes, why can't a habit?' -65
 

#3 2013-01-01 01:09:33

bobbym
Administrator

Online

Re: Logarithm game!

Hi;




In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
 

#4 2013-01-01 01:25:33

muxdemux
Full Member

Offline

Re: Logarithm game!

Last edited by muxdemux (2013-01-01 01:25:56)

 

#5 2013-01-01 11:01:06

julianthemath
Super Member

Online

Re: Logarithm game!

up 1=Agnishom, Bobbym
up 2=dunno
3) log3(8)=__
4) log__(64)=8

Last edited by julianthemath (2013-01-01 11:01:34)


Buy 1 smile for $1, sad for $0.50, big_smile for $3, tongue for $2.50, up for $1.25, down for $0.25, and roflol for $5.
Come on, buy a smiley!
 

#6 2013-01-01 11:07:28

bobbym
Administrator

Online

Re: Logarithm game!

Hi;




In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
 

#7 2013-01-01 11:10:56

julianthemath
Super Member

Online

Re: Logarithm game!

up 3=dunno
up 4=dunno
Okay!
5. log2(121)=__
6. log4(___)=5


Buy 1 smile for $1, sad for $0.50, big_smile for $3, tongue for $2.50, up for $1.25, down for $0.25, and roflol for $5.
Come on, buy a smiley!
 

#8 2013-01-01 11:13:59

bobbym
Administrator

Online

Re: Logarithm game!

Hi julianthemath;

I think you mean for 5


In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
 

#9 2013-01-01 11:17:43

muxdemux
Full Member

Offline

Re: Logarithm game!

Hey! What's wrong with my answer for 2? sad

 

#10 2013-01-01 12:53:08

julianthemath
Super Member

Online

Re: Logarithm game!

up 5=11
up 6=625
Muxdemux, sorry about that. sad
Bobbym, I don't mean that! tongue
Muxdemux, I think that is not correct in 6. sad
Anyways,
7. log3(___)=5
8. log6(64)=__


Buy 1 smile for $1, sad for $0.50, big_smile for $3, tongue for $2.50, up for $1.25, down for $0.25, and roflol for $5.
Come on, buy a smiley!
 

#11 2013-01-01 13:17:39

muxdemux
Full Member

Offline

Re: Logarithm game!

I think bobby is right, man.

but
.

I'm getting
and
for Q7 and Q8, respectively.

 

#12 2013-01-01 13:18:35

scientia
Full Member

Offline

Re: Logarithm game!

@julianthemath


The correct formula is
, not loga(na) = n. This is what you seem to be confusing.

 

#13 2013-01-01 15:15:15

julianthemath
Super Member

Online

Re: Logarithm game!

Okay, scientia. I might not do this well. Ask bobbym to close the thread.


Buy 1 smile for $1, sad for $0.50, big_smile for $3, tongue for $2.50, up for $1.25, down for $0.25, and roflol for $5.
Come on, buy a smiley!
 

#14 2013-01-01 15:36:24

muxdemux
Full Member

Offline

Re: Logarithm game!

Nah, come on! It's an easy mistake to make. Keep going! smile

 

#15 2013-01-01 17:55:38

julianthemath
Super Member

Online

Re: Logarithm game!

I am a bit shy! Just make a similar thread to this and I will join your topic. smile


Buy 1 smile for $1, sad for $0.50, big_smile for $3, tongue for $2.50, up for $1.25, down for $0.25, and roflol for $5.
Come on, buy a smiley!
 

#16 2013-01-02 00:40:17

bobbym
Administrator

Online

Re: Logarithm game!

Hi julianthemath;

Okay, scientia. I might not do this well. Ask bobbym to close the thread.

I will keep it open a bit longer in case you change your mind.


In mathematics, you don't understand things. You just get used to them.
Probability is the most important concept in modern science, especially as nobody has the slightest notion what it means.
90% of mathematicians do not understand 90% of currently published mathematics.
 

#17 2013-01-02 07:37:55

noelevans
Full Member

Offline

Re: Logarithm game!

julianthemath,  Have you see the fact that

  logy       logx
x        = y         which is still true for any positive base b (not 1) and positive x and y? 

One might get some interesting variations on these log problems using this fact.


Writing "pretty" math (two dimensional) is easier to read and grasp than LaTex (one dimensional).
LaTex is like painting on many strips of paper and then stacking them to see what picture they make.
 

#18 2013-01-03 11:26:06

julianthemath
Super Member

Online

Re: Logarithm game!

Whoops!
tongue


Buy 1 smile for $1, sad for $0.50, big_smile for $3, tongue for $2.50, up for $1.25, down for $0.25, and roflol for $5.
Come on, buy a smiley!
 

Board footer

Powered by FluxBB