Mathlean · Online math workspace

Clausen function calculator

Evaluate the Clausen trigonometric sums for integer order and real angle.

How to use this calculator

Edit ClausenCl(order,angle); angles are in radians.

Tap the math below to edit it and see the result. Once a result is ready, press Tab on a hardware keyboard to accept it. Outside a matrix, Return completes the line; the phone math keyboard has the same Return action.

Try it here

ClausenCl⁡(2,π2)\operatorname{ClausenCl}\left(2,\frac{\pi}{2}\right)

Interactive tools require JavaScript. You can read the guide and example without it.

What to know

Even orders use the sine-series convention and odd orders the cosine-series convention.

Mathlean combines visual mathematical input with computation and canvas tools. Results depend on the expression and available engine support; check important answers independently.

Browse all calculators and editors