You can use `sin(arctan())` as the repeatable operator instead of sqrt(). Then "unwrap" by applying ^-2 - (2^-2)

3=(sin(arctan(sin(arctan(sin(arctan(2))))))^−2 − (2)^−2

shiandow 21 hours ago | parent | next [-]

There's a 2 in the definition of sin :-)

Though it really depends which definitions you find more fundamental.

Still, exp and log seem like good choices.

> There's a 2 in the definition of sin :-)

How?

	▲	shiandow 2 hours ago \| parent [-]
		sin(x) = (e^ix - e^-ix) / 2i

anthk 16 hours ago | parent | prev | next [-]

Keep it simple.

2^2 - (2 / 2).

schiffern a day ago | parent | prev [-]

Perfect answer, I hate it :)