User manual LEXIBOOK GC2000

[. . . ] 5. Coordinate conversion This calculator can implement the conversion between rectangular coordinates and polar coordinates. The calculation result is saved in variable register I and J and the initial display is the data in variable register I. [. . . ] Si r=3, =2/7 , calculate the value of x and y in radian. Select "DEG" in SET UP mode 5. 562305899(x) (continued) Select "RAD" in SET UP status 1. 870469406(x) (continued) 2. 345494447(y) 17. 11901729(y) The following operations are invalid in base BASE_N status. 3+ 7 = 4. 377802119 32+52+72 = 83 68+13 = 9 1-sin2 30° = 0. 8660254038 Select "DEG" in SET UP status 4. 377802119 83. = 32 Calculate the absolute value of common logarithm of 6/13 |log6/13| = 0. 3357921019 Calculate the integer part of 5126/189 0. 3357921019 27 Calculate decimal part 5126/189 0. 121693121 Calculate the linear regression of the above data, and get constant term and correlation coefficient of the regression formula. Use regression formula to calculate estimated for xi=100 and estimated when yi=15. Calculate the logarithm regression of the above data to decide constant term and correlation coefficient of regression formula. Then use regression formula to calculate estimated when xi=36 and estimated when yi=17. Calculate the exponential regression of the above data to decide constant term and correlation coefficient of the regression formula. [. . . ] Then use regression formula to calculate estimated when xi=40 and estimated when yi=72. [. . . ]