Find log (2 Viewers)

[omniscience]

1 + 0.5 = 1.5,

1.5 is my answer, amirite?

 

[addikaye03]

You've skipped a few steps here that are going to confuse some people.

What I was pointing out was that your method is limited to simple indice-balancing questions. This works but denies students a deeper understanding of what logarithms are all about.

A simple:

7^x = 36
log 7^x = log 36 [taking logs]
x log 7 = log 36 [Using log laws]
x = log 36 / log 7

is the cleaner and more powerful method rather than muddying the water with equivalence of indices. As I was saying, leave that to the monkeys.

Best Regards
Herremann

dude... i obviously knew that i skipped a few steps, i was just trying to outsmart your Q, dw...

 

[zazzy1234]

Show how u find:

log₄ 8 ?

here is a more simple way

type into ur calculator

(log8)
--------
(log4)

and should give u 1.5

 

[zazzy1234]

Monkey: thats easy you noob,

log7 36=x

7^x=36

7^x=7^(ln36/ln7)

therefore x=ln36/ln7 or/ 1.841564442

Me: the monkey's pretty amazing

Monkey: Got anymore wise guy?

Me: Aww now your getting rude

(log36)
--------
(log7)

it should give 1.84 (2dp)

 

[bored of sc]

log₄8
= (log 8) / (log 4)
= (log 2³) / (log 2²)
= [3 (log 2)] / [2 (log 2)]
= 3/2

 

[Drongoski]

log₄8
= (log 8) / (log 4)
= (log 2³) / (log 2²)
= [3 (log 2)] / [2 (log 2)]
= 3/2

Thank u all for yr contribution so far.

 

[zazzy1234]

Thank u all for yr contribution so far.

u welcome

 

[addikaye03]

(log36)
--------
(log7)

it should give 1.84 (2dp)

umm...yer? what's your point? Put 7^1.841564442 into your calculator and tell me what you get

 

[zazzy1234]

umm...yer? what's your point? Put 7^1.841564442 into your calculator and tell me what you get

first of all

(log36)
---------
(log7)

is the way u would type it ur calculator lol

and how do u teach ur self ext 2 math, r u sitting a HSC for it