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sin x / x =/= sin! It's a SIN!

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  • 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?
    cindybubbles (👧 ❤️ 🎂 )

    Enter Cindyland here!

  • #2
    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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    • #3
      What calculus? In Algebra, I learned that you do the calculations inside the parentheses first.
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      • #4
        It's a nominal sin?



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        • #5
          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).
          cindybubbles (👧 ❤️ 🎂 )

          Enter Cindyland here!

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          • #6
            The important thing here is that sin (x) is a number, not sin times x (which means nothing anyways).

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            • #7
              ...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...
              Last edited by dalesys; 05-05-2012, 03:56 PM.
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              • #8
                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!
                cindybubbles (👧 ❤️ 🎂 )

                Enter Cindyland here!

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