Function GROWTH

Parameters

• known_y: any

  The set of y-values you already know in the relationship y = b*m^x.

  • If the array known_y's is in a single column, then each column of known_x's is interpreted as a separate variable.
  • If the array known_y's is in a single row, then each row of known_x's is interpreted as a separate variable.
  • If any of the numbers in known_y's is 0 or negative, GROWTH returns the #NUM! error value.
• known_x: any

  Optional. An optional set of x-values that you may already know in the relationship y = b*m^x.

  • The array known_x's can include one or more sets of variables. If only one variable is used, known_y's and known_x's can be ranges of any shape, as long as they have equal dimensions. If more than one variable is used, known_y's must be a vector (that is, a range with a height of one row or a width of one column).
  • If known_x's is omitted, it is assumed to be the array {1,2,3,...} that is the same size as known_y's.
• new_x: any

  Optional. Are new x-values for which you want GROWTH to return corresponding y-values.

  • new_x's must include a column (or row) for each independent variable, just as known_x's does. So, if known_y's is in a single column, known_x's and new_x's must have the same number of columns. If known_y's is in a single row, known_x's and new_x's must have the same number of rows.
  • If new_x's is omitted, it is assumed to be the same as known_x's.
  • If both known_x's and new_x's are omitted, they are assumed to be the array {1,2,3,...} that is the same size as known_y's.
• use_const: any

  Optional. A logical value specifying whether to force the constant b to equal 1. If const is TRUE or omitted, b is calculated normally. If const is FALSE, b is set equal to 1 and the m-values are adjusted so that y = m^x.

  • If const is TRUE or omitted, b is calculated normally.
  • If const is FALSE, b is set equal to 1 and the m-values are adjusted so that y = m^x.