Do you understand or should I elaborate more?
For the first one at least you should know that:
Note the difference with this:
Hey I'm currently doing Functions in Maths. I am from London and you may use different terminology for this topic. I do not understand a certain question, can anyone help please?
If f(x) = 1/x2 (x squared) find, 1/f(x), f(1/x) and 1/f(1/x)