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#1 2012-12-31 18:29:46

mathaholic
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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)

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#2 2012-12-31 21:16:16

Agnishom
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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?' -Alokananda

#3 2013-01-01 01:09:33

bobbym

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Re: Logarithm game!

Hi;

In mathematics, you don't understand things. You just get used to them.
Some cause happiness wherever they go; others, whenever they go.
If you can not overcome with talent...overcome with effort.

#4 2013-01-01 01:25:33

muxdemux
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Re: Logarithm game!

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

#5 2013-01-01 11:01:06

mathaholic
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Re: Logarithm game!

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

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

246 pages on Prime Numbers Wiki (+1)

#6 2013-01-01 11:07:28

bobbym

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Re: Logarithm game!

Hi;

In mathematics, you don't understand things. You just get used to them.
Some cause happiness wherever they go; others, whenever they go.
If you can not overcome with talent...overcome with effort.

#7 2013-01-01 11:10:56

mathaholic
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Re: Logarithm game!

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

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#8 2013-01-01 11:13:59

bobbym

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Re: Logarithm game!

Hi julianthemath;

I think you mean for 5

In mathematics, you don't understand things. You just get used to them.
Some cause happiness wherever they go; others, whenever they go.
If you can not overcome with talent...overcome with effort.

#9 2013-01-01 11:17:43

muxdemux
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Re: Logarithm game!

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

#10 2013-01-01 12:53:08

mathaholic
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Re: Logarithm game!

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

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#11 2013-01-01 13:17:39

muxdemux
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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
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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

mathaholic
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Re: Logarithm game!

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

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#14 2013-01-01 15:36:24

muxdemux
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Re: Logarithm game!

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

#15 2013-01-01 17:55:38

mathaholic
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Re: Logarithm game!

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

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#16 2013-01-02 00:40:17

bobbym

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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.
Some cause happiness wherever they go; others, whenever they go.
If you can not overcome with talent...overcome with effort.

#17 2013-01-02 07:37:55

noelevans
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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

mathaholic
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Re: Logarithm game!

Whoops!

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