Here you can plot direction fields for simple differential equations of the
form y′ = f(x,y).

This page uses javascript witch CSS rotations. This works in most modern browsers. The y′ function should be a javascript expression. It is evaluated in a “with Math” block, so you can use functions such as

This page uses javascript witch CSS rotations. This works in most modern browsers. The y′ function should be a javascript expression. It is evaluated in a “with Math” block, so you can use functions such as

`sin(x)`

and `pow(y,2)`

. Javascript supports the arithmetic operators:
`+`

, `-`

,
`*`

, and `/`

, and `%`

for the modulus. Here's an overview of the
Math object.