Functions – HSC Math

Posted In: Mathematics

A function is a special relationship where each input has a single output. It is often written as $y=f(x)$ where $x$ is input and $y$ is the output value.

  1. Say $x_1,x_2∈D$
    $f(x_1)=f(x_2)$ if $x_1=x_2$
    or, $f(x_1)≠f(x_2)$ if $x_1≠x_2$
    then the function is called a one-to-one function. Where D is the set of decimal numbers.
  2. if $f(-x)=f(x),$ then it is called even function
  3. if $f(-x)=-f(x),$ then it is called odd function

Post Tags: Functions | HSC

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