Question

If f(x)=-2/x^2, and h is not equal to zero, then the difference quotient (f(x+h)-f(x))/h =? I'm not sure what to do for f(x+h)?

Answer 1

what does the notation f(x) mean?

Answer 2

this is where confusion comes in, when we try to use "x" as part of the indepent variable, even tho it is perfectly fine to do so

Answer 3

if f(x) = -2/x^2 ; then determine f(a+h) - f(a)/h: this format is easier to tell that x can be: a or (a+h)

Answer 4

Then what is a?