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2 October, 02:54

Describe when to use a series and when to use an equation.

For example, when would you use: f (x) = 3x+5

and when would you use: Height = 2 + 3n (where n is 1, 2, 3 ...)

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  1. 2 October, 03:10
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    A series is used only for n taking the values of natural numbers

    But a function or an equation is used for all real values of x. It is not necessary that x should be a natural number.

    Step-by-step explanation:

    The equation is used when domain is all real values

    f (x) = 3x+5 is valid for all x real. x can take values as irrational also, negative or fractions.

    But in a series, such as 2+3n, we have the restriction for domain n as only the set of all natural numbers

    Here n cannot take negative or 0 or fractions or irrational numbers.

    Thus the domain is the one which makes the difference of using an equation and a series.

    A series is used only for n taking the values of natural numbers

    But a function or an equation is used for all real values of x. It is not necessary that x should be a natural number.
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