How to Treat Anxiety Naturally. 1  Separation Anxiety: âRelieving Anxiety,â August 2001, and âLearning To Be Alone,â July 2001. 2  Noise Phobias: âWhen the Thunder Rolls, â April 2000, and âBring In Da Noise,â May 2000. 3  Fears, Anxieties and Phobias: Reducing Your Dog's Anxieties, April 2007.
A formula is a special type of equation that shows the relationship between different variables. A variable is a symbol like x or V that stands in for a number we don't know yet. Example: The formula for finding the volume of a box is: V stands for volume, l for length, w for width, and h for height.
Recursive formula is a formula that is used to determine the next term of a sequence using one or more of the preceding terms. The recursive formula for the sequence 5, 20, 80, 320, ... is an = 4an-1. 1  A. an = a(n-1) / 7 where a1 = 39.  B. aan = a(n-1) - 7, where a1 = 39.