Step-by-step explanation:
subtitle values of x one by one:
a)f(2.5)=1/2.5-2
f(2.5)=1/0.5
f(2.5)=2
b)Now x=1.75
f(1.75)=1/1.75-2
f(1.75)=1/-0.25
f(1.75)=-4
c)x=2
f(2)=1/2-2
f(2)=1/0
f(2)=infinity
d)something divided by zero is equal to infinity that is exteremly large value
