zscdragon
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 MIT
 About:
 Bachelor in Mathematics
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Questions Answered

hartnn:
Group Title
Ifx+y=2e^θ cos ϕ,xy=2ie^θ sin ϕ,& u is the function of x & y,then prove that
(∂^2 u)/(∂θ^2 )+(∂^2 u)/(∂ϕ^2 ) =4xy (∂^2 u)/∂x∂y
…
 updated 16 days ago
 52 replies
 4 Medals
Mathematics

zscdragon:
Group Title
Among 40 people, 25 like black, 30 like red, 35 like white, at least how many people like all 3 colours?
Please show your thought process…
 updated one month ago
 12 replies
 5 Medals
Mathematics

zscdragon:
Group Title
WARNING: HIGH DIFFICULTY. MIGHT CAUSE YOUR BRAIN TO STACKOVERFLOW.
You are given a triangle that has sides of 66cm, 73cm, and 94cm. One of t…
 updated 2 months ago
 10 replies
 2 Medals
Mathematics

zscdragon:
Group Title
any idea how to know the direction of current on the lower loop in the picture?
http://puu.sh/8Sj5O.png
 updated 4 months ago
 3 replies
 2 Medals
Mathematics

zscdragon:
Group Title
hi what is x=2=5
 updated 11 months ago
 4 replies
 No Medals Yet
Mathematics

zscdragon:
Group Title
WOLFRAM ALPHA WRONG
the domain of x^(1/3) is from infinity to infinity, but wolfram says 0>infinity
http://www.wolframalpha.com/input/?i…
 updated one year ago
 9 replies
 No Medals Yet
Mathematics

zscdragon:
Group Title
SO HARD OMG! unit vector cross product help plzz
http://puu.sh/4swkm.png
 updated one year ago
 26 replies
 1 Medal
Mathematics

zscdragon:
Group Title
pure algebra, find h and k
3h+4k30=5sqrt((h2)^2+(k1)^2)
 updated one year ago
 10 replies
 1 Medal
Mathematics

zscdragon:
Group Title
(vector proves) HOW TO DO THIS HELP PLZZZ http://puu.sh/4cDR1.png
 updated one year ago
 5 replies
 No Medals Yet
Mathematics

magbak:
Group Title
PLEASE HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
I WILL AWARD MEDAL!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
…
 updated one year ago
 23 replies
 1 Medal
Mathematics

zscdragon:
Group Title
looking for someone who has client/server programming experience..
 updated one year ago
 3 replies
 1 Medal
Mathematics

zscdragon:
Group Title
A question for the developer of this website: in which programming language are this site's core functionalities made? (except of course htm…
 updated one year ago
 238 replies
 7 Medals
Mathematics

zscdragon:
Group Title
A question for the developer of this website: in which programming language are this site's core functionalities made? (except of course htm…
 updated one year ago
 5 replies
 3 Medals
Mathematics

zscdragon:
Group Title
whats the sum of this infinite series:
9/2  3/4 + 1/8  1/48 + 1/288...
 updated 2 years ago
 10 replies
 2 Medals
Mathematics

zscdragon:
Group Title
how to find the function of the set 1, 6, 31, 156, 781...
Please show your work, thanks
 updated 2 years ago
 15 replies
 4 Medals
Mathematics

zscdragon:
Group Title
does anyone know any website or tool that where I enter some numbers and it gives me a function that generate those numbers?
for exemple …
 updated 2 years ago
 7 replies
 1 Medal
Mathematics

mamachante:
Group Title
a cube has a surface area of 3750 square feet. What is its volume?
Please show your work
 updated 2 years ago
 6 replies
 No Medals Yet
Mathematics

sade12345:
Group Title
Find the slope of the line that passes through the points (5, 8) and (9, 4)
 updated 2 years ago
 2 replies
 No Medals Yet
Mathematics

zscdragon:
Group Title
Normally, when I am your father, you are my son.
In what circumstance, I'm your father, and you are my father too?
 updated 2 years ago
 115 replies
 3 Medals
Mathematics

zscdragon:
Group Title
Out of subject question  Does anyone know a good website like openstudy but mainly for improving English writing skills?
 updated 2 years ago
 2 replies
 No Medals Yet
Mathematics

amanij10:
Group Title
X to the 4rth power (times) x to the 6th power=
 updated 2 years ago
 1 reply
 No Medals Yet
Mathematics

J.L.:
Group Title
7x^3(1/2x) when x=2
 updated 2 years ago
 10 replies
 No Medals Yet
Mathematics

minecraftlover:
Group Title
If Jacob wrote a 6page paper in 5 hours and Olivia wrote a 3page paper in 2 hours, who wrote at a faster rate? Show your work.
…
 updated 2 years ago
 3 replies
 1 Medal
Mathematics

sakh:
Group Title
Is there a more elegant implementation of this?
x = subjects.pop(subjects.index(text))…
 updated 2 years ago
 4 replies
 No Medals Yet
Mathematics

jigglyjello:
Group Title
x+5=3x7
solve
 updated 2 years ago
 10 replies
 No Medals Yet
Mathematics

sushi323:
Group Title
whats the formula to find surface area of a sphere?
…
 updated 2 years ago
 3 replies
 No Medals Yet
Mathematics

kidmuney:
Group Title
if you earn one penny every 10 secs of your life then how many dollars would you have after 65 years
 updated 2 years ago
 3 replies
 No Medals Yet
Mathematics

jigglyjello:
Group Title
42y+5=9
solve
…
 updated 2 years ago
 8 replies
 No Medals Yet
Mathematics

kidmuney:
Group Title
a fireman did not tighten the hydrant completely so three ounces of water leak every min how many gallons of water leak in a week
 updated 2 years ago
 4 replies
 No Medals Yet
Mathematics

sushi323:
Group Title
When invested at an annual interest rate of 8%, an account earned $336 of simple interest in one year. How much money was originally inve…
 updated 2 years ago
 6 replies
 No Medals Yet
Mathematics
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