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location New York, NY
age 35
visits member for 2 years, 7 months
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Apr
1
comment How to compute the nth power of a matrix
@RecklessReckoner Typo, sorry, $P = \pmatrix{1 & -1\\-1 &2}$ and $P^{-1}$ is correct.
Apr
1
comment linear differential equation problem
@jesse fixed type
Apr
1
revised linear differential equation problem
edited body
Apr
1
comment How to compute the nth power of a matrix
@RyanMcGaha it sounds like the order is wrong, shouldn't you have $P = \pmatrix{1 & -1 \\1 & 2}$ with $P^{-1} = \pmatrix{2 & 1 \\1 & 1}$?
Apr
1
comment How to compute the nth power of a matrix
@RyanMcGaha what are you using for $D$ and $P$?
Apr
1
answered How to compute the nth power of a matrix
Apr
1
revised What's the first fundamental form of a regular surface in complex coordinates and how to get it?
added 6 characters in body
Apr
1
answered linear differential equation problem
Apr
1
comment linear differential equation problem
What are your thoughts about how to approach this problem? Please write some form of an attempt to solve it, and we will be glad to comment and give more hints.
Apr
1
revised linear differential equation problem
latex
Apr
1
answered Hilbert space $L^{2}(0,\pi)$
Mar
31
revised Prove - Cauchy function
added 55 characters in body
Mar
28
comment Analytical question on year calculation.
@Medex well, it grows to 25 in 6 and tasks each year to double. So to grow half the height must have taken one year because it was half the height and then doubled in one year to reach the full height, so half the height was at 6-1=5 years
Mar
27
answered Mathematical intro to Turing machines
Mar
27
comment First order ODE with $f'(x) = 810(10)^x$
@recursiverecursion I found out what $f(x)$ was first and then took the derivative.
Mar
27
revised First order ODE with $f'(x) = 810(10)^x$
added 6 characters in body
Mar
27
comment First order ODE with $f'(x) = 810(10)^x$
@recursiverecursion please see the edit
Mar
27
answered First order ODE with $f'(x) = 810(10)^x$
Mar
27
revised How to find a subset of given cardinality
added 3 characters in body
Mar
27
answered How to find a subset of given cardinality