40 likes | 105 Views
This guide provides step-by-step instructions on calculating roots with indices greater than 2 using a graphing calculator. Learn to access the MATH menu, use the xth root function, and handle error messages. Explore imaginary numbers with a+bι notation and decimal value approximation using the MODE menu.
E N D
Technology 13.1 Roots with Indices Greater Than 2 a. b. c. d. Figure 13.1a For Figure 13.1a, The cubed root is option 4 under the MATH menu. MATH 4 (-) 1 2 ) ENTER a. The xth root is option 5 under the MATH menu. Enter the index before the xth root. Enclose the radicand in a set of parentheses. 4 MATH 5 ( 1 6 ) ENTER b. (-) 4 MATH 5 ( 1 6 ) ENTER c. 4 MATH 5 ( (-) 1 6 ) d. 1 of 2
Technology 13.1 Roots with Indices Greater Than 2 Figure 13.1b For Figure 13.1b, ENTER The error message “NONREAL ANS” means that we are attempting to take an even root of a negative number. 2 of 2
Technology 13.8 Imaginary Numbers For Figure 13.8a, Figure 13.8a Change the calculator to a + bi mode by highlighting “a + bi” under the MODE menu. MODE ▼ ▼ ▼ ▼ ▼ ▼ ► ENTER Return to the home screen. 2nd QUIT Enter the square-root expression to be written in terms of i. 2nd (-) 5 ) ENTER This is an approximate decimal value for Enter this value to check. 2nd i 2nd 5 ) ENTER 1 of 2
Technology 13.8 Imaginary Numbers For Figure 13.8b, Figure 13.8b For ease in reading approximate values, set the calculator to the number of decimal places you want to round to. For example, round to two decimal places the values found in Figure 13.8a. Set the calculator to round to two decimal places. MODE ▼ ► ► ► ENTER 2nd QUIT Reenter the square-root expression. 2nd (-) 5 ) ENTER Reenter to check 2nd i 2nd 5 ) ENTER You could recall the previous entries by using . 2nd ENTRY 2 of 2