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 Jul 2 awarded Curious Dec 6 revised Great Monty Hall application in real life? deleted 182 characters in body Dec 6 awarded Commentator Dec 6 comment Great Monty Hall application in real life? even it's a different situation, is it possible to prove MATHEMATICALLY our situation gives 50%? Dec 6 revised Great Monty Hall application in real life? added 8 characters in body; edited title Dec 6 asked Great Monty Hall application in real life? Feb 17 comment Integral of a weird trigonometric function @Brain M.Scott Hi, I solved the integral, it gives 1/(2*sqrt(2))ln|csc(2*x+pi/4)-cot(2*x+pi/4)|. Wolfram Alpha gives an another integral, so to check if they are equal, I plugged x=3 in both equations and see if they both give the same answer.. but it didn't, do you know why? Feb 17 accepted Integral of a weird trigonometric function Feb 17 comment Integral of a weird trigonometric function how did you get this identity? Feb 17 asked Integral of a weird trigonometric function Feb 3 accepted How to find the equation? (Integral problem) Feb 3 comment How to find the equation? (Integral problem) i got f(x)=6x, but what to do next? Like what does it help to find a? Feb 3 comment How to find the equation? (Integral problem) but why the question gives the right side as f(t)dt and not f(x)dx? Feb 3 asked How to find the equation? (Integral problem) Jan 17 comment Finding the initial velocity using calculus by the way, I'm just wandering, what will the graph of velocity as a function of time look like? Jan 17 accepted Is this log form simple enough? Jan 17 accepted combinatorics: probability of picking elements Jan 17 comment Finding the initial velocity using calculus i got 39.05 as final answer with physics formula, but dunno how to use calculus to solve this :/ Jan 17 asked Finding the initial velocity using calculus Nov 25 comment combinatorics: probability of picking elements Sorry, I meant I know how to calculate the total number of ways of choosing 5 elements in 6, but after that, how do we calculate the number of elements containing 'a' and 'b' ?