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 | 1 | initial version |
You can use the series expansion as follows:
sage: de.series(ep)
(diff(f0(x), x)) + (diff(f0(x), x, x) + diff(f1(x), x))*ep + (diff(f1(x), x, x))*ep^2 + Order(ep^20)
And the truncate it:
sage: de.series(ep).truncate()
ep^2*diff(f1(x), x, x) + ep*(diff(f0(x), x, x) + diff(f1(x), x)) + diff(f0(x), x)
| | 2 | No.2 Revision |
You can use the series expansion as follows:
sage: de.series(ep)
(diff(f0(x), x)) + (diff(f0(x), x, x) + diff(f1(x), x))*ep + (diff(f1(x), x, x))*ep^2 + Order(ep^20)
And the then truncate it:
sage: de.series(ep).truncate()
ep^2*diff(f1(x), x, x) + ep*(diff(f0(x), x, x) + diff(f1(x), x)) + diff(f0(x), x)
| | 3 | No.3 Revision |
You can use the power series expansion as follows:
sage: de.series(ep)
(diff(f0(x), x)) + (diff(f0(x), x, x) + diff(f1(x), x))*ep + (diff(f1(x), x, x))*ep^2 + Order(ep^20)
And then truncate it:it to remove the big oh:
sage: de.series(ep).truncate()
ep^2*diff(f1(x), x, x) + ep*(diff(f0(x), x, x) + diff(f1(x), x)) + diff(f0(x), x)
