6.24.3 Can you answer these questions?

6.24.3.1 Passing input from a textfile into a function
6.24.3.2 How to get the coefficients of second-order Runge-Kutta formula coherently?
6.24.3.3 Taking "intermediate" limits, e.g. $ \cal X \to 0$ but $ \cal X /\epsilon \to \infty $ as $\epsilon\to 0$ -*without* taking $\epsilon \to 0$ directly
6.24.3.1 Passing input from a textfile into a function

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=231540

I have a text file which is a list of numbers and would like to pass each number in the list as input to a Mathematica function. 
For example, my text might contain [2, 1, 4], and I would like to pass ... 
[import]
 
asked by Joshua Steier https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=75099 1 vote
6.24.3.2 How to get the coefficients of second-order Runge-Kutta formula coherently?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=231528

The form of the second order Runge Kutta formula is as follows(the following is from page 287 of this book): 
$$\left\{\begin{array}{l} 
y_{n+1}=y_{n}+h\left(c_{1} K_{1}+c_{2} K_{2}\right) \\ 
K_{1}=f\... 
[numerics]
 
asked by A little mouse on the pampashttps://mathematica.stackexchange.com/landing/r/digest?cta=user&id=42417 1 vote
6.24.3.3 Taking "intermediate" limits, e.g. $ \cal X \to 0$ but $ \cal X /\epsilon \to \infty $ as $\epsilon\to 0$ -*without* taking $\epsilon \to 0$ directly

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=232859

I have an expression that I would like to take limits of but not in a conventional sense. Take for example, an expression like 
 
This expression involves intermediate variables ${\cal X(\epsilon)},{\... 
[calculus-and-analysis] [asymptotics]
 
asked by epsilonD3LT4 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=75082 1 vote