Question

Firstly

Answer 1

Answer:

a=3 IF it's continuos

Step-by-step explanation:

for continuity, the left limit of the first equation must be equal to the right limit of the third equation

and they are equal, as you can see putting x=2 in both equations

to be continuos in a point c, f(x) must:

be defined in c (so f(c) exists)

the limit in c exists (in this case both from left and right)

the limit in c must be equal to f(c)