  # Function equations

The notation for this function is H(x), and its equation is written as: {eq}H(x) = \begin{cases} & \text{0 if } x 0 \\ \end{cases} {/eq}

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## The Difference Between Functions & Equations (3 Key

Evaluating functions. What is a function? Worked example: Evaluating functions from  Fill order form

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## Equations of Functions

A function relates an input to an output. Saying f (4) = 16 is like saying 4 is somehow related to 16. Or 4 → 16. Example: this tree grows 20 cm every year, so the height of the tree is related to its age using the function h: h(age) = age ×   ## Functional equation

Functional equations are equations where the unknowns are functions, rather than a traditional variable. However, the methods used to solve functional equations can be quite different than   ## Functions and linear equations (Algebra 2, How

A function is an equation for which any $$x$$ that can be plugged into the equation will yield exactly one $$y$$ out of the equation. There it is. That is the definition of functions
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## Function Equations & Graphs

This equation cannot be solved in elementary functions (unless = 1=2+an integer), so we have to study its solutions by themselves, using the equation. 2. Bessel functions Equation (3) di ers