Logarithms. (1 Viewer)

[12o9]

Just a quick question. In an exam if you are given Log 2, is it assumed that the the log has a base of 'e' or '10' ? I always thought it was 'e' but my friend thinks otherwise. =/. Thanks for the help.

 

[tommykins]

回复: Logarithms.

80-90% of the logs they give you are ln.

Unless you get something like

2^x = 9.

Otherwise, mostly ln's.

 

[12o9]

Re: 回复: Logarithms.

80-90% of the logs they give you are ln.

Unless you get something like

2^x = 9.

Otherwise, mostly ln's.

ah so, if they give you logx they mean lnx unless stated otherwise?

 

[Troy2287]

Just a quick question. In an exam if you are given Log 2, is it assumed that the the log has a base of 'e' or '10' ? I always thought it was 'e' but my friend thinks otherwise. =/. Thanks for the help.

That would be correct.

 

[Troy2287]

Re: 回复: Logarithms.

ah so, if they give you logx they mean lnx unless stated otherwise?

That would also be correct.

 

[12o9]

Awesome. Thanks guys I got a bit confused just then.

 

[Aerath]

Just a quick question. In an exam if you are given Log 2, is it assumed that the the log has a base of 'e' or '10' ? I always thought it was 'e' but my friend thinks otherwise. =/. Thanks for the help.

Who was the 'friend'?

 

[Aerath]

yes, log x = ln x

if you're really paranoid and the supervisor isn't answering your question, i suppose you could use the change of base law just to be safe.

that's being a bit too paranoid though. prolly best to double check with your teachers.

Yeah, our examiners are bitchy old women who'd just harp on about: "Interpret the question your way", or something along the lines of that.

 

[tacogym27101990]

yes, log x = ln x

if you're really paranoid and the supervisor isn't answering your question, i suppose you could use the change of base law just to be safe.

[\quote]
how would you change the base if you didnt know the orginal base???

 

[4unitfreak]

Yeah, our examiners are bitchy old women who'd just harp on about: "Interpret the question your way", or something along the lines of that.

So do ours. I mean, it's Maths, not English!

 

[12o9]

Who was the 'friend'?

Png lol. im sure you cant tell from just that. He came to ask me, then he wouldn't believe me until i got 3 other people to tell him at school as well ==.

 

[Aerath]

Png lol. im sure you cant tell from just that.

Yeah I can? =\