[SOLVED] Simple Functions
I've got a few questions regarding Functions which are bothering me.
Q1: Find the largest possible domain of each of the following functions:
Answer = All real numbers except 2
Why is this? Also why can't we use negative integers for x e.g -2
Answer = All real numbers except 1 and 2
Why is this? Also why can't we use negative integers for x e.g -2 (i guess it's same as the part (a) I posted)
Q2: The domains of these functions are the set of all positive real numbers. Find their ranges:
Generally I'd put the least real number value (0) into the function and get the least range. In this case my answer is not matching with the real answer.
Answer = f(x) is greater than or equal to 2
Q3: Find the range of each if the following functions. All the functions are defined for all real values of x:
Answer = f(x) is greater than or equal to 2How is that?
Answer = f(x) is greater than or equal to -1
How is that?
Thanks in advance!