Calculus
R=1R=1
(−1,1)\(\left\)(-1,1\(\right\))
[−1,1]\(\left\[\lbrack\)-1,1\(\right\]\rbrack\)
R=2R=2
(−2,2)\(\left\)(-2,2\(\right\))
[−2,2]\(\left\[\lbrack\)-2,2\(\right\]\rbrack\)