1 | initial version |

2 | No.2 Revision |

~~Duplicate ~~Possibly a duplicate of

A quick and dirty workaround would be to replace your original code:

```
x = var('x')
y = function('y')(x)
DEQ = diff(y,x) + y - 1 == 0
sol = desolve(DEQ, y)
show(DEQ)
print(latex(DEQ))
```

by something along the lines of:

```
sage: x = SR.var('x')
sage: y = function('y')(x)
sage: de = diff(y, x) + y - 1 == 0
sage: de
y(x) + diff(y(x), x) - 1 == 0
sage: y1 = function("y'")(x)
sage: de_pretty = de.substitute({diff(y, x): y1})
sage: de_pretty
y(x) + y'(x) - 1 == 0
```

and running `show`

or `view`

or `latex`

on `de_pretty`

rather than `de`

.

One could write a function to prettify differential equations, by parsing the expression tree of the differential equation, and substituting derivatives by aptly named replacement functions.

One would then run `desolve`

on the original differential equation,
and use the prettified equation for showing, viewing, latexing.

3 | No.3 Revision |

Possibly a duplicate of

A quick and dirty workaround would be to replace your original code:

```
x = var('x')
y = function('y')(x)
DEQ = diff(y,x) + y - 1 == 0
sol = desolve(DEQ, y)
show(DEQ)
print(latex(DEQ))
```

by something along the lines of:

```
sage: x = SR.var('x')
sage: y = function('y')(x)
sage: de = diff(y, x) + y - 1 == 0
sage: de
y(x) + diff(y(x), x) - 1 == 0
sage: y1 = function("y'")(x)
sage: de_pretty = de.substitute({diff(y, x): y1})
sage: de_pretty
y(x) + y'(x) - 1 == 0
```

and running `show`

or `view`

or `latex`

on `de_pretty`

rather than `de`

.

One could write a function to prettify differential equations, by parsing the expression tree of the differential equation, and substituting derivatives by aptly named replacement functions.

One would then run `desolve`

on the original differential equation,
and use the prettified equation for showing, viewing, latexing.

Or maybe it would be easier to work the other way! Start by defining the pretty differential equation, and substitute an actual differential equation for solving.

Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.