Sharp EL9900C EL-9900C - Page 49
Example, Second, functions
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Chapter 3: Basic Calculations - Basic Keyboard x Enters an "x", an unknown variable. Use this key when working with graph equations. Refer to Chapter 4 "Basic Graphing Features" to learn how to use this feature. Second functions To access the second function of a key (printed above the keys in yellow), press and release @, then press the key you want to use. % Set the preceding value as a percentage. Example • Get 25% of 1234. 1 2 3 4 | 2 5 @ % E * Percentage must be a positive value equal to or less than 100. x Note: Enters "x-1", and returns an inverse by raising a value to the -1 power. The inverse of "5", for example, is " 1 5 ". Example • Raise 12 to the -1 power. (= 0.083333333) 1 2 @ x E When no base number is entered, "x-1" will be entered, with "x" left blank. C @ x ;1 2 E _ Note: Enters "a ". Example • Bring 4 to the 5th root. (= 1.319507911) 5 @ _ 4 E When no depth of power is entered, " a " is entered, with both number areas left blank. C @ _ 5 ' 4 E + Enters a square root symbol. Example • Obtain the square root of 64. (= 8) @ + 6 4 E 39