Question

If f(x) = 2x^2 – 3, evaluate f (1) – f (-2)

Answer 1

Step-by-step explanation:

If f(x) = 2x^2 – 3, evaluate f (1) – f (-2)

F(2x-1) = x+2

Let,

2x-1 = y

=>x = (y+1)/2

Then,F(y) = (y+1)/2 +2

= (y+5)/2

We can get, F(x) = (x+5)/2

From here, F(x+3) = (x+3+5)/2

= (x+8)/2.