Periodic TableOpen the table

Calculus, finally on one sheet

116 functions drawn as squares, with their graphs, their properties and short films that explain them. Made for engineering students who'd rather see the maths than memorise it.

By Håkan Lennerstad, professor emeritus in mathematics · “This is graphical mathematics!”

sin x
ln x
eˣ · click me
arctan x
Start where you are

Three levels. Same table.

The levels aren't separate courses. They're a filter on the same sheet. Start calm, switch on more as you go.

The table

The whole map, one click away

Like the real periodic table: see everything at once, understand the structure, click a square for the story.

116 functions13 families30 properties7 relationsSearch by nameEvery square has its own page
The films

Short films, straight to the point

Subtitles appear here, in their own band below the picture.

1
Click a square

Any of the 116. Each opens with its graph, properties and rules.

2
Press play

A few minutes of clear explanation, recorded until it's right. 34 films in total.

3
Follow the relations

Every film ends where the function leads: its derivative, its inverse, its transform.

All 34 films
Håkan Lennerstad
Håkan Lennerstad
The author
“Calculus is all about functions. And their properties, of course.”

Håkan Lennerstad is professor emeritus in mathematics at Blekinge Institute of Technology. He drew the table himself over many years of teaching engineers who learn best by seeing: every square, every glyph, every arrow.

More about the table