erm … isn't it iπ log(2)/4 - π^2/8 ?
On your keyboard, there should be a key marked alt or opt.
It's probably on the bottom row, next to the space-bar.
If it's not marked, just try each key which does nothing when you press it on its own.
Anyway, this key is like the shift key that types capitals for you - you hold down alt while you type a normal letter, and it gives you something different: `Ω≈ç√∫~µ≤≥÷«æ…¬˚∆˙©ƒ∂ßåœ∑´®†¥¨^øπ“‘≠–ºª•¶§∞¢#€¡
And if you press both the shift and the alt at the same time, you get ŸÛÙÇ◊ıˆ˜¯˘¿»ÆÚÒÔÓÌÏÎÍÅŒ„‰ÂÊÁËÈØ∏”’±—‚·°‡ﬂﬁ›‹™⁄
Have you found it?