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visits member for 1 year, 10 months
seen Mar 15 at 3:26

Jan
6
comment In search of an angle
Do you know the equations or slopes of the green lines?
Jan
4
comment Solving: How to find an inverse function for this function?
What do you want the inverse to be when x=0?
Nov
18
comment Additive nonhomogeneous function
Here's one: en.wikipedia.org/wiki/Antilinear_map
Oct
28
awarded  Commentator
Sep
19
awarded  Editor
Jul
19
comment What really are determinants?
Here's a good place to start: en.wikipedia.org/wiki/Determinant but your question is quite off topic for this site, which is about the software Mathematica.
Jul
17
comment How to calculate the number of factorizations of a square matrix?
Have you seen this? cse.unsw.edu.au/~jingling/papers/laa.pdf
Jun
23
comment Hidden Markov Model Calculation
This is a site about the software Mathematica. It appears your question is not about Mathematica. If it is, please update your question to show what the coding issue is.
May
30
comment Reducing an integral equation to a differential one
Suppose that there were two functions f_1(x) and f_2(x) both of which have the same answer K(a-b). Take the difference between the integrals of f_1(x) and f_2(x) and this has to be zero. What does that tell you?
May
30
comment Reducing an integral equation to a differential one
Here's a hint: suppose f(x) was equal to a constant. What would the integral be?
May
15
comment Solve $(x^2 + 5)^2 - 15(x^2 + 5) + 54 = 0$
Try this: define a new variable z=x^2+5 and solve z^2-15z+54 using the quadratic formula. Then solve for x in terms of z.
May
14
awarded  Caucus
May
12
comment Fractal Analysis
Perhaps the most fundamental way to compare two fractals would be by their dimension.
May
8
answered What does “-2E-07x” means?
Apr
5
answered How to solve this geometric/arithmetic sequence problem without guessing and checking?
Sep
26
awarded  Teacher
Sep
26
answered Steps to Re-Learn Mathematic the right way
Sep
25
awarded  Supporter