Write a formula below, and Herbie will try to improve it. Enter approximate ranges for inputs.

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Please enter formulas as FPCore expressions, including the top-level `FPCore`

form, using only the following supported functions:

`+`

,`-`

,`*`

,`/`

,`abs`

- The usual arithmetic functions
`and`

,`or`

- Logical connectives (for preconditions)
`pow`

- Raising a value to a power
`exp`

,`log`

- Natural exponent and natural log
`sin`

,`cos`

,`tan`

- The trigonometric functions
`asin`

,`acos`

,`atan`

- The inverse trigonometric functions
`sqrt`

,`cbrt`

- Square and cube roots
`PI`

,`E`

- The mathematical constants

*Note*: all formulas submitted here are logged and made public. See what formulas other users submitted.