Answer:
The answer is f(-4) = -4 ,f(-3.1) = -3.1 , f(1.2) = 1.2 , f(2.8) = 2.8
Step-by-step explanation:
We have to find out f(-4) , f(-3.1) , f(1.2) , f(2.8)
For the condition f(x) = x
This means that whatever we give input to the function the value to the
function is equal to the value input this means that
f (input) = output
Here output = input
f ( input ) = input
∵ f(-4) = -4
f(-3.1) = -3.1
f(1.2) = 1.2
f(2.8) = 2.8
