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View Poll Results: What is log(10)
2.3025 9 16.67%
1 43 79.63%
42 2 3.70%
Voters: 54. You may not vote on this poll

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  #41  
Old 05-01-2018, 08:53 AM
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BG5150 BG5150 is offline
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I've printed for years. In 9th grade, our biology teacher made us print b/c he refused to try to decipher 9-th grade handwriting.

In 12th grade I was admonished by my history teacher for printing, saying it was unbecoming of a college bound student. So I wrote "cursive" in her class only. Then I was chastised for having poor handwriting!
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  #42  
Old 05-01-2018, 10:23 AM
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Who uses cursive while doing math? That's crazy town.
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  #43  
Old 05-01-2018, 10:24 AM
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Context is everything.

In high school textbooks "log" was used for base 10 logarithms while "ln" was used for base e logarithms.

In college textbooks "log" always meant base e.

Some college math courses introduce the complex logarithm which introduces "Log" for the principle value logarithm.

In a school exam setting you can always ask for clarification. In an SOA exam setting the context is usually clear.
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  #44  
Old 05-01-2018, 10:25 AM
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Limited use of cursive is useful sometimes. Use the cursive "l" to distinguish between "l", capital "I", and the number "1".
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  #45  
Old 05-01-2018, 10:28 AM
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Cursive math is okay until half of your alphabet is greek.
Then it becomes a serious problem.
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  #46  
Old 05-01-2018, 10:59 AM
Latitude30 Latitude30 is offline
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In log base 1.0563. Log(10) = 42
One of the survey answers.

What does this mean in real life?

If you invest a sum of money in 5.63% annual return portfolio fund from age 23 till you retire at 65 (42 years), you will multiply your starting investment times 10

Last edited by Latitude30; 05-01-2018 at 11:02 AM..
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  #47  
Old 05-01-2018, 11:09 AM
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Actually those are fairly reasonable numbers; well done.
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  #48  
Old 05-01-2018, 12:44 PM
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I generally use a hybrid mix of cursive and print.
I'm not a doctor, but I sure do write like one.
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  #49  
Old 05-01-2018, 12:54 PM
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Quote:
Originally Posted by DanielSong39 View Post
Context is everything.

In high school textbooks "log" was used for base 10 logarithms while "ln" was used for base e logarithms.

In college textbooks "log" always meant base e.

Some college math courses introduce the complex logarithm which introduces "Log" for the principle value logarithm.

In a school exam setting you can always ask for clarification. In an SOA exam setting the context is usually clear.
I don't recall this. but it's been several years.

Now, in some disciplines you'll use only base-e, so they assume there is no reason to have other bases. Computer programs prefer simplification in their creation, so using base-e is standard, calling it "log" is standard, and if you want to calculate a different base, then you need to know how to do that using their simplified code.
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  #50  
Old 05-01-2018, 12:59 PM
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Quote:
Originally Posted by DanielSong39 View Post
Context is everything.

In high school textbooks "log" was used for base 10 logarithms while "ln" was used for base e logarithms.

In college textbooks "log" always meant base e.

Some college math courses introduce the complex logarithm which introduces "Log" for the principle value logarithm.

In a school exam setting you can always ask for clarification. In an SOA exam setting the context is usually clear.
In a CAS exam setting, you can usually just state your assumptions and move on with the problem.
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