The TI-30X IIS Calculator and Exponents

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The TI-30X IIS Calculator and Exponents 2nd ARROWS ^ 2 x PARENTHESIS Squaring a number can be done easily using a x2 key. Cubing a number or raising it to any power can be achieved by using ^ key followed by number 3. Ø Squaring: input the number and then x2 =, 42 is found by inputting: 4 x2 = You screen will look like: 42 16 ➢ Cubing or raising a number to the third power: input the number and then ^3 =, 43 is found by inputting: 4 ^3 = You screen will look like: 4^3 64 ➢ Raising a number to a power greater than 3: input the number and then ^ (the power desired) =, (-3)4 is found by inputting: ( (-)3 ) ^ 4 = You screen will look like: (-3)^4 81 Note: if you did not put the -3 in parentheses, the orders of operation raises the 3 to the fourth power and then makes it negative, hence the answer will be -81. Be careful that you always put negative numbers in parentheses when raising them to powers. ➢ You can also take values to fractional exponents: 82/3 can be found by inputting: 8 ^ (2 ÷3) = You screen will look like: 8 ^ (2 / 3) 4 Taking a root can be done easily using √ option, which is achieved by pressing 2nd x2. Any other root (n-root), can be calculated by pressing (the root desired) 2nd ^. 2 ➢ Square root: √ the number =, is found by inputting: 2nd x 36 = You screen will look like: √(36 6 ➢ Cube root: ∛the number =, is found by inputting: 3 2nd ^ 64 = You screen will look like: 3 x√64 4 ➢ Taking a root higher than a cube root: (the root desired) 2nd ^ (the value) =, is found by inputting: 4 2nd ^ 1296 = You screen will look like: 4 x√1296 6 Since the root symbol works like a grouping symbol, there is no need to use parentheses for negative values. is found by inputting: 5 2nd ^ (-)32 = You screen will look like: 5 x√-32 -2 Remember that you can’t take an even root of a negative number. If you do you will get an error message. .

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