Hi, On Thu, Sep 18, 2008 at 2:25 PM, William Stein <[EMAIL PROTECTED]> wrote: > [...] > This will be going on the main sagemath.org webpage, and could be a > superb way of getting > students really interested in sage. I wonder if somebody could > volunteer to read through > the tutorial and make some comments, find typos, etc.? It's fun, not > too long, etc.
>From the "The Definition of the Derivative" at http://sage.math.washington.edu/home/elliottd/calctut/derivative.html here are some typos and suggestions: [1] You might want to rewrite the sentence "'h' is assumbed to be approaching zero." as "The symbol 'h' is assumed to be approaching zero." That is, avoid starting a sentence with a maths symbol; also remove the "b" from "assumbed". [2] You might want to rewrite the snippet "The change in Bob's car's speed over time was his acceleration," as "The change in the speed of Bob's car over time was his acceleration," or something similar. In particular, avoid double possessive apostrophes like "Bob's car's speed". [3] For the constant rule of differentiation: "If f(x) = a and a is a natural number, then f'(x) = 0" Do you mean to say "...and a is a real number..."? If so, then you might want to reflect the change at http://sage.math.washington.edu/home/elliottd/calctut/diffrules.html The same comment applies for the constant multiple rule. [4] You might want to rewrite the snippet "If f is the quotient of g(x)/h(x)" as "If f is the quotient g(x)/h(x)" and reflect the change at http://sage.math.washington.edu/home/elliottd/calctut/diffrules.html [5] You might want to rewrite the sentence "f'(x) (pronounced 'f prime of x') signifies the first derivative of f(x)." as "The symbol f'(x) (pronounced 'f prime of x') signifies the first derivative of f(x)." or as "The function f'(x) (pronounced 'f prime of x') signifies the first derivative of f(x)." That is, avoid starting a sentence with a maths symbol. [6] In the image at http://sage.math.washington.edu/home/elliottd/calctut/pix/calctut/derivative05.png we have 3*(x + h)^2 = 3*x^2 + 6*h*x + 3*h^2 not this: 3*(x + h)^2 = 3*x^2 + 3*h*x + 3*h^2 [7] Following the snippet "so I'll use an actual number in tandem with the Constant Multiple Rule." are 2 lines of equations. I'm not sure what you're trying to say with those equations, since it looks like the first such line says something like this: "If = (3xh + 3h^2) / h = ..." [8] You might want to rewrite the sentence "v(t) is a better representation for instantaneous velocity than x'(t), which explains the above." as "The function v(t) is a better representation for instantaneous velocity than x'(t), which explains the above." or something like "The symbol v(t) is a better representation for instantaneous velocity than x'(t), which explains the above." Again, avoid starting sentences with maths symbols. [9] You might want to rewrite the sentence "You can see that as Bob's velocity gradually increased (the red line) that his distance traveled (the blue line) began to rise more quickly." as "You can see that as Bob's velocity gradually increased (the red line), his distance traveled (the blue line) began to rise more quickly." [10] You might want to rewrite the snippet "it's much safer just to leave it how it is," as "it's much safer just to leave it as it is," [11] You might want to rewrite the sentence "Check back in a couple weeks." as "Check back in a couple of weeks." -- Regards Minh Van Nguyen Web: http://nguyenminh2.googlepages.com Blog: http://mvngu.wordpress.com --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
