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sin x / x =/= sin! It's a SIN!
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Old 05-03-2012, 06:36 PM
cindybubbles cindybubbles is offline
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Default sin x / x =/= sin! It's a SIN!

One time at a calculus lecture, my professor was warning us about simple mistakes costing us marks on an upcoming exam.

He told us of one instance where a student was faced with the equation (sin x)/x.

For those of you who are rusty with calculus, or haven't studied, you have to calculate the sine of x (where x is a number) before dividing it by x.

But that was lost on this student, who, apparently, crossed out the x's and left his answer as "sin". That's right. SIN.

We all had a hearty laugh about it when the professor proclaimed "and it's a SIN!"

What do you think? Is it a mortal sin, or venial sin?

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Old 05-03-2012, 07:36 PM
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Quote:
Quoth cindybubbles View Post
What do you think? Is it a mortal sin, or venial sin?
Did they have to repeat calculus (Hell) or get a B instead of an A for the course (Purgatory)?
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Old 05-04-2012, 02:45 AM
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What calculus? In Algebra, I learned that you do the calculations inside the parentheses first.

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Old 05-04-2012, 03:17 AM
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It's a nominal sin?




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Old 05-04-2012, 12:28 PM
cindybubbles cindybubbles is offline
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Quoth Stormraven View Post
What calculus? In Algebra, I learned that you do the calculations inside the parentheses first.
I forgot if it was algebra or calculus. But I put in the parentheses to make sure that you knew it was (sin x)/x and not sin (x/x).

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Old 05-05-2012, 01:52 AM
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The important thing here is that sin (x) is a number, not sin times x (which means nothing anyways).

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Old 05-05-2012, 02:56 PM
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...and when you get the opposite over the adjacent, it really is the sin...e

Especially if they're neighbors not on the same line...
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Last edited by dalesys; 05-05-2012 at 03:56 PM.

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Old 05-05-2012, 05:09 PM
cindybubbles cindybubbles is offline
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Quote:
Quoth Flying Grype View Post
The important thing here is that sin (x) is a number, not sin times x (which means nothing anyways).
Unfortunately, for that student, sin (x) meant sin times x.

And this happened in UNIVERSITY, of all centers of education!
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