“the limit at x = 5 approaches 9 for the function f(x) = x + 4”, you would write: Where the arrow just means “approaches.” The general way of writing the notation, without reference to any specific function, is: What the formula is basically telling you is that you plug in ...
summable function) has an integrable absolute value. “Integrable” means that you can find anintegral. The “Absolutely” portion of the term refers to the fact that it’s theabsolute value of the functionthat must be integrable on thereal line(Feeman, 2015). In notation, we can write ...
Not a function: “one to many“. In other words, let’s say you had one x-value that maps to many y-values. For example, — in coordinate notation — (2,1) and (2,10). If the first number (the x-value) repeats, then you do not have a function. To put that another way, ...