what is the f of x ?you know, the [f(x)]

⚑ Flag

"f(x)", or function notation, is just another way of saying "a function of x". It's synonymous with "y =", however, especially with higher degree equations (i.e. the highest exponent value is 4 as in x^4), f(x) is much more preferred because you have more flexibility. You can have multiple equations and not get mixed up because your functions don't necessarily all have to be "y =". Instead, they can be f(x) or g(x) or s(x), depending on the problem.Function notation becomes more apparent in higher level math such as Geometry or Algebra II. In problems such as synthetic division, graphing cubic equations, or even finding the area of a circle, functions are almost always used.However, don't be confused! f(x) does not mean "f multiplied by x"! It means "plug a value for x in the equation". So if we had a function of x like f(x) = x^2 + 1 and we wanted to know what f(2) equalled, we would substitute 2 for x in the equation then do math (in this case, f(2) = 5 ).~ Azaler