Texas Instruments TINSPIRE Reference Guide - Page 64
Logistic, Catalog >, In Radian angle mode and Rectangular complex format
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log( ) log(Value1[,Value2]) ⇒ value log(List1[,Value2]) ⇒ list Returns the base-Value2 logarithm of the first argument. Note: See also Log template, page 2. For a list, returns the base-Value2 logarithm of the elements. If the second argument is omitted, 10 is used as the base. If complex format mode is Real: /s keys If complex format mode is Rectangular: log(squareMatrix1[,Value]) ⇒ squareMatrix Returns the matrix base-Value logarithm of squareMatrix1. This is not the same as calculating the base-Value logarithm of each element. For information about the calculation method, refer to cos(). squareMatrix1 must be diagonalizable. The result always contains floating-point numbers. If the base argument is omitted, 10 is used as base. In Radian angle mode and Rectangular complex format: £ ¡ ¢ To see the entire result, press and then use and to move the cursor. Logistic Logistic X, Y[, [Freq] [, Category, Include]] Computes the logistic regression y = (c/(1+a·e-bx)) on lists X and Y with frequency Freq. A summary of results is stored in the stat.results variable. (See page 97.) All the lists must have equal dimension except for Include. X and Y are lists of independent and dependent variables. Freq is an optional list of frequency values. Each element in Freq specifies the frequency of occurrence for each corresponding X and Y data point. The default value is 1. All elements must be integers | 0. Category is a list of numeric or string category codes for the corresponding X and Y data. Include is a list of one or more of the category codes. Only those data items whose category code is included in this list are included in the calculation. For information on the effect of empty elements in a list, see "Empty (void) elements" on page 131. Catalog > 58 TI-Nspire™ Reference Guide