fx-82MS fx-82TL fx-9860GII TI-83
x²
On a TI calculator you can compute a square
x²
or via the CATALOG as
CATALOG ⎵
2nd 0 ►² ENTER
Example 1
To calculate 32 = 9
3 x² 3² ENTER 3² 9
and you get the same result with
3 ∧ 2 ENTER 3^2 9
3 × 3 ENTER 3∗3 9
Example 2
To calculate (−4)2 = 16 where parentheses are needed
( (–) 4 ) x² ENTER (-4)² 16
Take care, because −42 = −16
(–) 4 x² ENTER -4² -16
Example 3
To calculate 02 = 0
0 x² ENTER 0² 0
Example 4
To calculate sin2 (¾π) = 0.5 in radians
π H SIN · 7 5 2nd ∧ ) x² ENTER sin(.75π)² .5
Example 5
To calculate 32 + 42 = 25
3 x² + 4 x² ENTER 3²+4² 25
and continue with √25 = 5
√ I ANS 2nd x² 2nd (–) ENTER √(Ans 5