Archive for October, 2007

UNsolved problem 106796 added to Rational-functions

Monday, October 29th, 2007

unknown: Click on the link to solve this problem: I have 3 questions: 1) Which of the following functions would have even symmetry? y=2x, y=3x^3, y=5x^2+3, y=2x-5 2) Find the domain, the horizontal and vertical asymptotes, and which values of x … Read more

Study Tricks

Monday, October 29th, 2007

stressed_teacher: Well exam time has started and I have 4 exams in 6 days, so not too happy about that Anyway I’ve been studying hard up until and I’ve got my 1st exam on friday. But I’ve got a big problem… I am no longer motivated to study… don’t ...

Integration by parts VS. Formula in text

Monday, October 29th, 2007

unknown: I am either making the same mistake repeatedly, or I can’t factor! I did this LaTeX graphic is being generated. Reload this page in a moment. first by parts and then using the formula LaTeX graphic is being generated. … Read more

Limits of Multivariable Functions

Monday, October 29th, 2007

Saladsamurai: 1. The problem statement, all variables and given/known data Find the limit, if it exists, or show that the limit does not exist. limit (x,y) –> (0,0) a) f(x,y) = (xycosy) / (3x^2 + y^2) b) f(x,y) = (xy) / sqrt(x^2 + y^2) … Read more

Queena Lee Chua: Saving the World, One Student at a Time

Monday, October 29th, 2007

Larry Shiller: PinoyCentric caught up with Professor Chua while she was giving an exam to a math class. At the back of the room, she was watching her students while answering, in whispers, our questions about school, life, and everything else in … Share and Enjoy: These icons link to social ...

Derivative of 1 / ln x

Monday, October 29th, 2007

sdobbers: 1. The problem statement, all variables and given/known data Find the derivative of 1 / ln x 2. Relevant equations N/A 3. The attempt at a solution y = 1/lnx First Attempt: y’ = -1/x/(lnx)^2 y’ = -1 / x(lnx)^2 Second Attempt: … Read more

Prove that the set of transcendental numbers has cardinality c

Monday, October 29th, 2007

ZeroOne23: Prove that the set T of transcendental numbers (numbers that do not satisfy some polynomial equation of positive degree with rational coefficients) has the power of the continuum, ie has cardinality c. … Read more

Re:[ap-calculus] Related rates units question

Monday, October 29th, 2007

unknown: Rex Boggs Writes: So it is rather hard to convince students that the degree is a unit but the radian is not. How do you teach. Share and Enjoy: These icons link to social bookmarking sites where readers can share and discover new web pages. Read more

Stupid Tabular Method for Integration by parts

Monday, October 29th, 2007

andytoh: Is this the correct way to use the Tabular Method for LaTeX graphic is being generated. Reload this page in a moment. repeated diff: LaTeX graphic is being generated. Reload this page in a moment. LaTeX graphic is being generated. … Read more

The math of torture

Monday, October 29th, 2007

Benzoate: Torture and math – they don’t seem to go together unless you’re an unprepared student taking a final exam. Mathematician Vladimir Lefebvre developed Reflexive Theory, which shows that in societies that accept the compromise of good with … Share and Enjoy: These icons link to social bookmarking sites where readers can ...