206 reputation
28
bio website eosweb.dk
location Denmark
age 25
visits member for 3 years, 4 months
seen Nov 18 at 15:00

Partner at Eos Web I/S.


Nov
10
comment Finding $\frac{\partial}{\partial x}\left(x^2+y^2+z^2\right)^{-1}$
Start with $(x^2+y^2+z^2)^{-1}=\frac{1}{(x^2+y^2+z^2)}$. Then use the chain rule to take the derivative.
Nov
9
comment Can't do basic integral
Your addition "From comments" is missing a minus before the $c$ in the denominator. If you correct this, then you will see that it equals the last expression you have written. You can always simplify integral expressions before integration like this to avoid those troublesome combination rules.
Nov
8
accepted What is $n!$ when $n=0$?
Nov
8
awarded  Yearling
Nov
8
answered basic proportions, why the results are inconsistent?
Nov
8
revised Can't do basic integral
added 283 characters in body
Nov
8
comment Can't do basic integral
You were right, I made a mistake with a minus. It is corrected now. And yes, this equals what you have above.
Nov
8
revised Can't do basic integral
added 1 character in body
Nov
8
revised Can't do basic integral
added 10 characters in body
Nov
8
comment Can't do basic integral
What power is reduced? As an example, $\int x^{3} dx=\frac{1}{4} x^4+k $. The power is raised not reduced
Nov
8
answered Can't do basic integral
Nov
8
comment Can't do basic integral
Move the exponent inside the parenthesis before integrating.
Nov
6
awarded  Editor
Nov
6
revised Maple differentiation syntax?
added 18 characters in body
Nov
6
answered Maple differentiation syntax?
May
19
awarded  Teacher
Apr
21
awarded  Notable Question
Oct
30
accepted Why is $\frac{d}{dx}\exp(x) = \exp(x)$?
Oct
30
comment Why is $\frac{d}{dx}\exp(x) = \exp(x)$?
Thanks for the explanation. You mention "depends on the way you define $e$". How could you define $e^x$ in another way?
Oct
29
comment Why is $\frac{d}{dx}\exp(x) = \exp(x)$?
@AndrewD.Hwang. That you must explain further :)