Hermite Polynomial Definition

1. Type: 'e^2tz-t^2'.
2. Type: right-arrow twice.
3. Type: '=\sum '.
4. Type: 'n=0' then: right-arrow.
5. Type: '\infty ' then: right-arrow.
6. Type: 'H_n' then: right-arrow then: '(z'.
7. Type right-arrow twice.
8. Type: 't^n'.