Home
| math | handbook
| dictionary | function | eq.
| graphics
| coding
| example
| help
| ?
| 中文
Input:
sum(k)
Write:
`sum(k)`
Compute:
$$\sum _k k$$
Output:
$$\sum _k k== \frac{1}{2}\ k+\frac{1}{2}\ {k}^{2}$$
Result: $$\frac{1}{2}\ k+\frac{1}{2}\ {k}^{2}$$
zoom graph by mouse wheel.
Home | list | about | wiki | forum | contact | donate | index | ? | 中文