User manual TEXAS INSTRUMENTS TI-30XS

[. . . ] TI-30XS MultiViewTM and TI-30XB MultiViewTM Scientific Calculator Important information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Switching the TI-30XS MultiView calculator on and off . . . . . . . . 3 Display contrast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Note: Press - to clear the screen between problems. -> 30 E< p"<- > g q 6 " E< Retain radian mode on the calculator and calculate the sine of 30. Change the calculator to degree mode and find the sine of p / 6 radians. > 30 %I <E< p<>gq6"%I4 E< Rectangular to polar %I %I displays a menu to convert rectangular coordinates (x, y) to polar coordinates (r, q) or vice versa. Set Angle mode, as necessary, before starting calculations. Copyright 2006 Texas Instruments Incorporated 20 Example Convert polar coordinates (r, q)=(5, 30) into rectangular coordinates. Then convert rectangular coordinates (x, y) = (3, 4) into polar coordinates. R P -p $$""< -%I"3 5 %` 30 E< %I"4 5 %` 30 E< %I"1 3 %` 4 E< %I"2 3 %` 4 E< Converting (r, q) = (5, 30) gives (x, y) = (4. 3, 2. 5) and (x, y) = (3, 4) gives (r, q) = (5. 0, 53. 1). Trigonometry >?@ %Z[\ Enter trigonometric functions (sin, cos, tan, sin-1, cos-1, tan-1), just as you would write them. Set the desired Angle mode before starting trigonometric calculations. Example Degree Mode Tan p$$<@ 45 E < %\1E< Tan-1 Cos 5 V ?60 E < Copyright 2006 Texas Instruments Incorporated 21 Example Radian Mode Tan p"<- @ gq4 "E < %\1 E< Tan-1 n Cos 5 V?gq4 "E < n Problem Find angle A of the right triangle below. Then calculate angle B and the length of the hypotenuse c. Reminder: 7 7 tan A = - therefore mA = tan-1 - 3 3 mA + mB + 90 = 180 therefore mB = 90 - mA c= 3 +7 2 2 A 3 C 7 c B p$$""< Copyright 2006 Texas Instruments Incorporated 22 -%\ 7 q 3 "E< 90 U%i< %b 3 FT 7 F< n To one decimal place, the measure of angle A is 66. 8, the measure of angle B is 23. 2, and the length of the hypotenuse is 7. 6 meters. Hyperbolics %Y % Y displays the HYP indicator and accesses the hyperbolic function of the next trigonometry key that you press. Angle modes do not affect hyperbolic calculations. Example HYP %Y>5 ET2 < ##<!!!!!%Y%Z< Copyright 2006 Texas Instruments Incorporated 23 Logarithm and exponential functions A B %] %^ A yields the common logarithm of a number. B yields the logarithm of a number to the base e (e 2. 819291929). % ^ raises e to the power you specify. Examples LOG A1 E < LN B1 5EV2< %]A2E< A% ] 5 " E < % ^ 85 < 10 x ex Constant %l % l turns Constant feature on and lets you define a constant. To store an operation to K and recall it: 1. Enter any combination of numbers, operators, and/or values, up to 44 characters. K displays in the indicator line. Copyright 2006 Texas Instruments Incorporated 24 4. Each subsequent time you press <, the TI-30XS MultiViewTM calculator recalls the stored operation and applies it to the last answer or the current entry. Press % l again to turn Constant feature off. Examples K %l V2T3< 4< 6< Reset K %l%lF< 5< 20 < Turn off K %l 1 T 1 < Copyright 2006 Texas Instruments Incorporated 25 Problem Given the linear function y = 5x 2, calculate y for the following values of x: -5; -1. %lV 5 U 2 < M5< M1< %l Memory and stored variables z L %h %{ The TI-30XS MultiViewTM calculator has 7 memory variables--x, y, z, t, a, b, and c. You can store a real number or an expression that results in a real number to a memory variable. [. . . ] Do not mix brands (or types within brands) of batteries. Do not mix rechargeable and non-rechargeable batteries. Install batteries according to polarity (+ and -) diagrams. Do not place non-rechargeable batteries in a battery recharger. [. . . ]