EngiNotes

EngiNotes is a programmable calculator that allows you to run small code snippets in a Python-like language to visualize complex calculations.

Organize your calculations in notebooks, a collection of code cells that you can run individually to print and visualize data.

It provides routines to manipulate N-dimensional arrays such as scalars, vectors and matrices.

Main Features

- Unlimited notebooks.
- Interactive 2D plots.
- ND-array objects.
- In-app manual (swipe left). No network connection required.


Plots

- Lines.
- Scatter plot for point clouds.
- Fill areas bounded by some function.


General Math

- Operators: +, -, *, /, ^ (power), ' (transpose), @ (matrix multiplication).
- Random number generator.
- Sum, average, min and max.
- Variance and standard deviation.
- Ceil, floor and round functions.
- Logarithms, exponential function and square root.


Linear Algebra

- Solution to systems of linear equations.
- Transpose and inverse matrix.
- Trace.
- Determinant and condition number.
- Eigenvalues and eigenvectors.
- LU factorization.
- Norms: 1, 2 and infinity.


Trigonometric

- Conversion between radians and degrees.
- Sin, cos, tan.
- Inverse sin, cos, tan
- Hyperbolic sin, cos, tan.


Machine Learning Response Functions

- ELU, RELU, leaky RELU.
- Sigmoid and hard sigmoid.
- Tanh and hard tanh.