By SPSS Inc. Staff
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0} into column 1. If range had included values outside the range for x, missing values would have been returned for those out-of-range values. inv Summary Syntax The inv function generates the inverse matrix of an invertible square matrix provided as a block. inv(block) The block argument is a block of numbers with real values in the form of a square matrix. The number of rows must equal the number of columns. The function returns a block of numbers with real values in the form of the inverse of the square matrix provided.
The function takes one of two forms. The first form has two arguments, both of which are ranges. Values in the first range are the independent variable values. The second range represents the coefficients of the polynomial, with the constant coefficient listed first, and the highest order coefficient listed last. The second form accepts two or more arguments. The first argument is a range consisting of the independent variable values. All successive arguments are scalar and represent the coefficients of a polynomial, with the constant coefficient listed first and the highest order coefficient listed last.
In either case, data steps in the correct direction. Remainders are ignored. Examples The operation data(1,5) returns the range of values {1,2,3,4,5}. The operation data(10,1,2) returns the values {10,8,6,4,2}. Note that if start and stop are equal, this function produces a number of copies of start equal to step. For example, the operation data(1,1,4) returns {1,1,1,1}. Related Functions size, [ ] array reference Transform Function Descriptions 37 Transform Function Reference diff Summary The diff function returns a range or ranges of numbers which are the differences between a given number in a range and the preceding number.