# Human readable representation of formulas

Hello,

i do have question regarding the representation of formulas in sage.

Is a formula typed into sage, the routines will transform the expression, which could be less human readable. How can I programm sage to use the typed in formula and still compute a solution?

Example:

```
f(h)=0.19+0.91*((h+140)/760)^2
```

will be transformed to

```
(1.57548476454294e-6)*(h + 140)^2 + 0.190000000000000
```

Sincerely

Are you trying to preserve the exact input? Perhaps a string literal is what you need.