Texas Instruments voyage 200 User Manual - Page 859
randMat, randNorm, randPoly, RandSeed, RclGDB, RclPic, For a listing of the settings, see
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randMat( ) MATH/Probability menu randMat(numRows, numColumns) ⇒ matrix Returns a matrix of integers between -9 and 9 of the specified dimension. Both arguments must simplify to integers. RandSeed 1147 ¸ randMat(3,3) ¸ Done ë82 ë 3 3 ë66 0 4 ë6 Note: The values in this matrix will change each time you press ¸ randNorm( ) MATH/Probability menu randNorm(mean, sd) ⇒ expression Returns a decimal number from the specific normal distribution. It could be any real number but will be heavily concentrated in the interval [mean-3ù sd, mean+3ù sd]. RandSeed 1147 ¸ randNorm(0,1) ¸ randNorm(3,4.5) ¸ Done .492... ì3.543... randPoly( ) MATH/Probability menu randPoly(var, order) ⇒ expression Returns a polynomial in var of the specified order. The coefficients are random integers in the range ë 9 through 9. The leading coefficient will not be zero. order must be 0-99. RandSeed 1147 ¸ Done randPoly(x,5) ¸ ë 2ø x5+3ø x4ì 6ø x3+4ø xì 6 RandSeed MATH/Probability menu RandSeed number If number = 0, sets the seeds to the factory defaults for the random-number generator. If number ƒ 0, it is used to generate two seeds, which are stored in system variables seed1 and seed2. RandSeed 1147 ¸ rand() ¸ Done .158... RclGDB CATALOG RclGDB GDBvar RclGDB GDBvar ¸ Done Restores all the settings stored in the Graph database variable GDBvar. For a listing of the settings, see StoGDB. Note: It is necessary to have something saved in GDBvar before you can restore it. RclPic CATALOG RclPic picVar [, row, column] Displays the Graph screen and adds the picture stored in picVar at the upper left-hand corner pixel coordinates (row, column) using OR logic. picVar must be a picture data type. Default coordinates are (0, 0). real( ) MATH/Complex menu real(expression1) ⇒ expression real(2+3i) ¸ 2 Returns the real part of the argument. real(z) ¸ z Note: All undefined variables are treated as real variables. See also imag(). real(x+iy) ¸ x Appendix A: Functions and Instructions 861