Endospores are hardy, defensive structures that enable some bacteria to survive harmful environmental conditions, such as starvation, high temperatures, desiccation (drying out), chemical disinfectants and extremes in pH.
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 first is to use a form that only depends on the number of the term, n. To find the first five terms when you know the general term, simply substitute the values 1, 2, 3, 4, and 5 into the general form for n and simplify.he second way is to recursively define a sequence. A recursive definition uses the current and/or previous terms to define the next term. You can think of a k+1 being the next term, a k being the current term, and a k-1 being the previous term. Consider the sequence where a 1 = 5 and a k+1 = 2 a k - 1.