fx-82MS fx-82TL fx-9860GII TI-83
√
On a TI calculator you can take the square root
√ I 2nd x²
or via the CATALOG as
CATALOG ⎵
2nd 0 ►√( ENTER
Example 0
To calculate √-1 = i
√ I 2nd x² (–) 1 ENTER √(-1 i
Be sure to select the number mode a+bi.
Example 1
To calculate √64 = 8
√ I 2nd x² √(▯ 6 4 ENTER √(64 8
Example 2
To calculate √0 = 0
√ I 2nd x² 0 ENTER √(0 0
Example 3
To calculate √2 = 1,4142…
√ I 2nd x² 2 ENTER √(2 1.414213562
Example 4
To calculate √2 × √2 = 2
√ I √ I 2nd x² 2 ) × 2nd x² 2 ENTER √(2)∗√2 2
Example 5
To calculate √2√2 = 1.6325…
√ I √ I 2nd x² 2 ) ∧ 2nd x² 2 ENTER √(2)^√(2 1.632526919
Example 6
To calculate (√2√2)√2 = 2
√ I √ I 2nd x² 2 ) ∧ 2nd x² 2 ENTER √(2)^√(2 1.632526919
and then
√ I ∧ 3nd x² 2 ENTER Ans^√(2 2
Example 7
To calculate 2√2 = 2.6651…
√ I 2 ∧ 3nd x² 2 ENTER 2^√(2 2
Example 8
To enter √−2
√ I ERR:NONREAL ANS
1:Quit
2:GotoSHIFT x² (–) 2 ENTER CLEAR
The square root from a negative number always gives a message for number mode setting Real.
Example 9
To calculate √(−1)² = 1
√ I SHIFT x² ( (–) 1 ) x² ENTER √((-1)² 1
Example 10
To calculate ln (√7) = 0.9729...
√ I LN SHIFT x² 7 ENTER ln(√(7 .9729550745
and also ln (√7) = ½ ln (7) = 0.9729...
LN 7 ) ÷ 2 ENTER ln(7)/2 .9729550745
Example 11
To calculate 2√½ = 2√2 × 2 × ½ = √2 = 1.4142…
√ I 2 SHIFT x² 1 ÷ 2 ENTER 2√(1/2 1.414213562