3. f(x)
In mathematics, “f(x)” represents a function
In mathematics, “f(x)” represents a function. A function is a mathematical relationship between two sets of numbers, known as the input and output. The function takes an input value, denoted as “x,” and produces a corresponding output value, denoted as “f(x).”
The notation “f(x)” is used to emphasize that the output value is determined by the input value. The function can be thought of as a machine that operates on the input value to generate the output value.
For example, let’s consider the function f(x) = 2x + 3. In this case, the input value is the variable “x,” and the function multiplies it by 2 and adds 3 to get the output value, f(x). So, if we substitute x = 4 into the function, we get f(4) = 2(4) + 3 = 8 + 3 = 11.
The notation “f(x)” is widely used in mathematics to represent various types of functions, such as linear functions, quadratic functions, trigonometric functions, and logarithmic functions. It allows us to express and analyze relationships between variables and make calculations based on specific inputs.
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