User manual TEXAS INSTRUMENTS TI-30 ECO RS

[. . . ] Polar to Rectangular . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Trigonometric Functions . . . . . . . . . . . . . . . . . . . . . . . . . . Hyperbolic Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . One-Variable Statistics. . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 2. 4-ENG 30eco_eng_f_d_nl_fin. doc TI-30 eco RS, Config 1: Eng Deu Fra Nld Bob Fedorisko Revised: 10/21/03 11:06 AM Printed: 10/21/03 11:18 AM Page 4 of 80 Logarithmic Functions $ "R % "S 15. 32 $ D 12. 45 $ J 2 " R > 10 0 J 15. 32 % D 12. 45 % J . 693 " S D1J 1. 185258765 2. 280428117 0. 2. 729159164 5. 250879787 1. 999705661 2. 999705661 (e=2. 71828182846) Angle Units # Cycles angle-unit setting between degrees, radians, and grads without affecting displayed number. Cycles (converts) angle-unit setting between degrees, radians, and grads for display, entry, and calculation. 45 "Q "Q "Q DEG RAD GRAD DEG "Q 45 0. 785398163 50. 45. DMS Enter DMS (Degrees/Minutes/Seconds) values as D. MMSSs, using 0s as necessary: D . MM SS s degrees (0–7 digits) decimal-point separator minutes (must be 2 digits) seconds (must be 2 digits) fractional part of a second 5-ENG 30eco_eng_f_d_nl_fin. doc TI-30 eco RS, Config 1: Eng Deu Fra Nld Bob Fedorisko Revised: 10/21/03 11:06 AM Printed: 10/21/03 11:18 AM Page 5 of 80 For example, enter 48¡5'3. 5" as 48. 05035. Note: Before using a DMS value in a calculation, you must convert it to decimal with " q. " q Interprets display as DMS and converts it to decimal. 30. 09090 " q 30. 1525 " w Temporarily displays current value as DMS. 30. 1525 " w 30¡09'09"0 Rectangular to Polar " k converts rectangular coordinates (x, y) to polar coordinates (r, q). Convert rectangular coordinates (10, 8 ) to polar. # (if necessary) 10 " [ 8 " k (display r) " [ (display q) DEG DEG DEG r DEG 8 12. 80624847 38. 65980825 Polar to Rectangular " e converts polar coordinates (r, q) to rectangular coordinates (x, y). Convert polar coordinates (5, 30) to rectangular. # (if necessary) 5 " [ 30 " e (display x) " [ (display y) DEG DEG DEG x DEG 30 4. 330127019 2. 5 6-ENG 30eco_eng_f_d_nl_fin. doc TI-30 eco RS, Config 1: Eng Deu Fra Nld Bob Fedorisko Revised: 10/21/03 11:06 AM Printed: 10/21/03 11:18 AM Page 6 of 80 Trigonometric Functions Before using the trigonometric functions ( ), *, +, " V, " W, or " X), select DEG, RAD, or GRAD with #. Note: Before using a DMS value in a calculation, you must convert it to decimal with " q. # (if necessary) 90 ) > 30 * J 1"V > . 5 J DEG DEG DEG DEG DEG DEG 1. 89. 5 Hyperbolic Functions To access hyperbolic functions, press ( and then the function ( ( ), ( *, ( +, ( " V, ( " W, ( " X). Note: DEG, RAD, or GRAD does not affect hyperbolic calculations. 5() D2J 5("V D2J 74. 20321058 76. 20321058 2. 312438341 4. 312438341 One-Variable Statistics "h 4 "a "\ Clears all statistical data. Adds or removes multiple occurrences 7-ENG 30eco_eng_f_d_nl_fin. doc TI-30 eco RS, Config 1: Eng Deu Fra Nld Bob Fedorisko Revised: 10/21/03 11:06 AM Printed: 10/21/03 11:18 AM Page 7 of 80 "c "d "] "_ "^ "b of a data point. Enter data point, press " \, enter frequency (1–99), press 4 to add or " a to remove data points. Population standard deviation (n weighting). Sample standard deviation (n-1 weighting). Number of data points. Find the sum, mean, population standard deviation, and sample standard deviation for the data set: 45, 55, 55, 55, 60, 80. The last data point is erroneously entered as 8, removed with " a, and then correctly entered as 80. " h (if STAT is displayed) n= 45 4 n= 55 " \ 3 4 n= 60 4 n= 84 n= 8"a n= 80 4 " c (sum) " ] (mean) " _ (deviation, n weighting) " ^ (deviation, n-1 weighting) 1 4 5 6 5 6 350. 58. 33333333 10. 67187373 11. 69045194 8-ENG 30eco_eng_f_d_nl_fin. doc TI-30 eco RS, Config 1: Eng Deu Fra Nld Bob Fedorisko Revised: 10/21/03 11:06 AM Printed: 10/21/03 11:18 AM Page 8 of 80 Probability A combination is an arrangement of objects in which order is not important, as in a hand of cards. [. . . ] If negative, press O after entering the mantissa. If negative, press O either before or after entering exponent. 1. 2345 O 5 O 65 . 1. 2345 . 65 13-ENG 30eco_eng_f_d_nl_fin. doc TI-30 eco RS, Config 1: Eng Deu Fra Nld Bob Fedorisko Revised: 10/21/03 11:06 AM Printed: 10/21/03 11:18 AM Page 13 of 80 Display Indicators M1, M2, or M3 2nd A value other than 0 in M1, M2, or M3. Calculator will access 2nd function (printed above key) of next key pressed. [. . . ]