You have to try to guess the rule that is indicated by the first few terms in the sequence, and then find a formula that involves a variable such as "n". This may involve some experimenting.
6 Σn 2 What is n?? Please answer
Summation, as a mathematical concept, does not have a single discoverer; it has been used in various forms for thousands of years. Ancient civilizations, including the Babylonians and Greeks, employed summation techniques for counting and calculations. The formal notation and understanding of summation evolved over time, with significant contributions from mathematicians like Isaac Newton and Leonhard Euler in the 17th and 18th centuries. Today, the sigma notation (Σ) commonly represents summation, popularized by these earlier mathematicians.
You can use summation notation.
.....5 .....Σ 9r ...r=1
Summation notation is a mathematical shorthand used to represent the sum of a sequence of terms. It is typically denoted by the Greek letter sigma (Σ) and includes an index of summation, such as "i," along with lower and upper limits indicating the range of values for that index. For example, Σ (from i=1 to n) of a_i means to sum the terms a_1, a_2, ..., a_n. This notation simplifies the expression of large sums and is commonly used in mathematics, statistics, and computer science.
The cross product of two vectors, A and B, can be represented using summation notation as: (A x B)i ijk Aj Bk where i, j, and k are indices representing the components of the resulting vector, and ijk is the Levi-Civita symbol.
Rests
The symbol used in summation notation is called the "sigma" symbol, represented by the Greek letter Σ. It indicates the operation of summing a sequence of numbers, typically defined by an index variable and specified limits. For example, Σ from i=1 to n signifies the sum of terms from i=1 to n.
4Σ (12 - 4i)i=0
It is not clear whether the question is 3a + 4a + 5a + 6a^3 which would be 12a + 6a^3 or 3a + 4a + 5a + (6a)^3 = 12a + 216a^3 or (3a + 4a + 5a + 6a)^3 = 5832*a^3 But none of these really require summation notation!
Thorium-232 is typically indicated with the notation "Th-232."
Staff lines indicated pitch.