Sharp EL-738 - Operating Modes

2.5. CALCULATOR KEYS
• SQUARE ROOT:
√
x
Use the
x
√
key. 2ndF third key, forth row.
Example:
Calculate
√
64.
√
64 means
2
√
64.
Press 2
2ndF
x
√
64 =
The answer is 8.
Example:
Calculate
3
√
64.
Press 3
2ndF
x
√
64 =
The answer is 4.
Example:
Calculate
4
√
3
3
Press 4 2ndF
x
√
3 2ndF y
x
3 =
The answer is 2,28.
• NUMERIC FRACTIONS
Example:
Calculate
3
4
−
1
2
Press 3 ÷ 4 − 1 ÷ 2 =
The answer is 0.25.
Calculate
1
2
+
2
3
+
3
5
Press 1 ÷ 2 + 2 ÷ 3 + 3 ÷ 5 =
The answer is 1,77.
• LOGARITHM to the base e: ln
Example:
Calculate ln 3.
Press
2ndF ln , (second key, second last row) 3 =
The answer is 1,10.
Example:
Calculate ln

1 253
1479

.
Press
2ndF ln ( 1 253 ÷ 1 479 =
The answer is −0,17.
17