handyderivatives 2.0.2

Differntiate a list of functions of and auomatically compile a LaTeX document to view the results.

handyderivatives

This is a command line program to get the derivatives for differentiable functions of a single variable.

Installation

pip install handyderivatives

https://pypi.org/project/handyderivatives/

Running it

To simply print back to the terminal.

handyderivatives -f functions.txt

To automatically compile a LaTeX document with pdflatex

handyderivatives -f functions.txt --latex

Opening the output

Normally you want to immediately see the output, so run something like this.

handyderivatives -f functions.txt --latex && zathura equations.pdf

The program used to open the PDF doesn't matter, as long as it's not something like Adobe Reader which takes a couple seconds to open on most machines. If you can enter a PDF and it opens it, then it will work. Zathura is nice because if you ctl + c in your terminal the the window with the PDF closes, this doesn't happen with them all.

How the input file should be formatted

Edit a file that has functions listed one per line. The left hand side should be what your function will be differentiated with respect to, i.e f(x) . The right hand side will be the expression.

# This is how the file for the argument -f should be formatted.

c(x) = r * (cos(x) + sqrt(-1) * sin(x))
a(t) = 1/2 * g * t ** 2
f(x) = sin(x**2) * x^2
h(w) = E ^ (w^4 - (3 * w)^2 + 9)            # Capital E is interpreted by sympy as the base of the natural log.
g(x) = exp(3 * pi)                          # So is exp(x), but written as a function taking an argument.
p(j) = csc(j^2)

If you don't format it like that you will likely run into errors. You can add comments

TODO

Make the program take an expression as one argument, and the variable it's being differentiated with respect to another argument.

handyderivatives --diff 'sin(x) + E ^ (sqrt(-1) * x)' x

LaTeX PDF output