The array formulae summation arrays are a set of numbers of a number of patterns or characteristics. The array is a very important category of objects in mathematics, with a wide range of applications. The formula is an important tool in the study of arrays, and this paper will briefly describe the formulas of columns. I. Equivalent arrays of equations are a series of columns where the margin between the adjacent two of the index columns is a constant. Of which the difference is the difference between the two adjacent to the range and is expressed in d. The first item of the generic formula is a1 and the difference is d, and the first item of the generic formula is a1 and the first item of the formula is a1 plus (n-1) d2. The first item of the formula is a1, the difference is d, the first item of the formula is sn=n(a1+an)/2 of which is an=a1+(n-1) d. Ii. Equivalent arrays such as equations are one of those in which the margin between the adjacent two of the index columns is a constant. Of which, the ratio is the ratio of the two adjacent in the equation column, expressed in q. The first item of the generic formulae is a1 and the first item of the equation is a1 and the first item of the generic formulae is a1 and the first item of the range of the formulae is a1 and the first item of the range of the formulae is a1 and the first item of the range of the formulae is a1 and the first item of the range of the formulae is a1 and the first item of the formulae is a1 and the first item of the range of the formulae is a1 and the first item of the range of the formulae is a1 and the first item of the formula of the formulae is a1 and the first item of the range of the formula of the formulae is a1 (1/a1 + 1 (n-1)d), of which d is the constant and the difference is derived from the preceding items. The first entry for the first n and formulae is a1, the first item is a1 and the first item is a sn=1/a1+1/a2+ 1/an iv. The fibonacci formula is a column for each of the index columns that is the sum of the first two, of which the first two can be expressed in equal numbers of 1 and 0. The generic formula is given as fn in the fibonacci column and the generic formula is fn=f(n-1)+f(n-2), of which f1=1, f2=1. The gold partitioning ratio is closer to the gold partitioning ratio of φ1+sqrt(5)/2, i. E. Fn/f(n-1)→φ5 and the reconciliation formulae adjustment and grade numbers refer to a level of the relevant calibration column, i. E. 1/1+1/2+1/3+ +1/n is condensed at the bottom of the natural logarithm. E the generic formula of the generic formulae for the reconciliation of grades is: an=1/n2. The first n item and the first n item of the formula and the sn are: sn=1+1/2+1/3+... +1/n6 the factor factor of the formulae refers to the multiplication from 1 onwards, multiplied by the sum of n integers, expressed in n! Of which, 0! = 1. 1. Factorial formula n! = 1*2*3*... *n2. Double factor formula is defined as a double factor starting at n, minus 2 per multiplier, using n! Through the application of the formulas that are common in the arrays, the extrapolation of the arrays can be simplified and easier to resolve. Of course, in resolving a problem, the appropriate formula should be chosen according to the circumstances。
