Reputation
17,854
Top tag
Next privilege 20,000 Rep.
Access 'trusted user' tools
Badges
2 47 97
Impact
~1.0m people reached

Jun
24
awarded  Nice Answer
Jun
24
revised Involuted vs Idempotent
deleted 168 characters in body
Jun
24
comment Returning a decimal number from a calculation of ranges
What is the interval to be used for? There may be a natural way to map speed to interval.
Jun
24
revised Involuted vs Idempotent
edited body; added 137 characters in body
Jun
24
answered Involuted vs Idempotent
Jun
24
comment How do you pronounce the symbol $'$ in $f'$?
It may have been common to pronounce $f'$ as 'f dash' in British English in 1981, but for as long as I've been learning mathematics (including eight years in a British university) I've always called it 'f prime'.
Jun
24
comment Formula for gallons in a trough
@Arturo thanks for the edits!
Jun
23
answered Formula for gallons in a trough
Jun
23
comment $\int \cos^2 x$ - Where did I go wrong?
@Aryabhata that's a nice trick, though I think for pedagogical purposes I prefer yunone's answer (+1 to both, though)
Jun
22
comment How can I prove that functions in a certain family have unique maxima?
If you can give more detail on the class of functions (e.g. an explicit parameterization, or a set of criteria which all functions in the class satisfy) then we will be able to give you a better answer.
Jun
22
revised Volume of a cissoid?
latex
Jun
22
comment Best way of computing the decimal representation of a fraction with an arbitrary precision?
@Theo: when you say 'compute it until the digits start repeating' what do you mean? For example, when does your algorithm decide that the digits start repeating when computing the decimal expansion of 121212129/999999999?
Jun
22
comment How can I count waypoints between a curve?
What form does the curve between A and B take? Is it a straight line, an arc of a circle, a cubic spline (the last two will require additional 'control points' to be specified - what are they?) or something else?
Jun
19
awarded  Tenacious
Jun
18
answered What is a good language to develop in for simple, yet customizable math programs?
Jun
17
comment Counting sequences
Do you mean $a_i$ wherever you have $u_i$ (or vice versa)?
Jun
17
awarded  Cleanup
Jun
17
comment Calculate area under a curve
Yes, you are right. You can see that it works by looking at the plot. As for an explanation of why it works...
Jun
17
revised Calculate area under a curve
rolled back to a previous revision
Jun
17
revised Calculate area under a curve
added 32 characters in body