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1d
revised Finding Laplace Transform of $te^{-t}$
added limits at which some parts are evaluated
2d
comment Finding Laplace Transform of $te^{-t}$
True, then I've made a mistake somewhere because the answer should not be 0
2d
asked Finding Laplace Transform of $te^{-t}$
Apr
13
accepted Arc length of astroid
Mar
2
comment How to solve $xy'+y+x=0$
@Did well, I didn't read that obviously
Feb
24
accepted How to solve $xy'+y+x=0$
Feb
24
comment How to solve $xy'+y+x=0$
but then you are just multiplying what you divided by
Feb
24
comment How to solve $xy'+y+x=0$
but then the integrating factor would just be "x" though?
Feb
24
asked How to solve $xy'+y+x=0$
Feb
24
accepted How to solve $xy' + y + y^2 = 0$
Feb
24
asked How to solve $xy' + y + y^2 = 0$
Dec
13
awarded  Popular Question
Sep
6
comment Can you prove $F=ma$ mathematically?
So $F=ma$ is derived directly from an axiom
Apr
29
accepted Radius of convergence for series
Apr
29
asked Radius of convergence for series
Apr
28
comment exercises for Euclid's Elements
You can find some on archive.org. Just search "euclid exercises," or something related. Here's one example: archive.org/details/euclidbookwithn00euclgoog. Also you can just look for copies of the elements and sometimes they put exercises at the end of each book for schools back in the day. hope that helps, I'm looking for some good exercises as well
Apr
13
awarded  Critic
Apr
13
awarded  Popular Question
Mar
17
comment Arc length of astroid
$x^{-2/3} + 1$ though, right?
Mar
17
asked Arc length of astroid