Question

in a sequence described by a function, what does the notation f(3)=1 mean

Answer 1

X = 3
Y = 1

f(3)=1
X Y

Answer 2

Answer with explanation:

If an expression, f(x)=y, is a function, then for every y , there is unique x and for every x, there is unique y.

⇒f(3)=1, means ,when in the expression, x is substituted by, 3 , the value of y is 1.

⇒x(Domain)       y(Range)

  3                         1

The Set of values that x can take is called Domain of the function, and the set of values that y can take is called Range of the function.