## Calculus: Early Transcendentals 8th Edition

You can see this by subbing it into an equation. lets suppose that f(x) = $x^{2}$ and our value for are variable are s = 2 and t = 5. when we sub this in we get $7^2$ = $2^2 + 5^2$ 49 = 4 + 25 this statement is false meaning that f(s+t) $\ne$ f(s) + f(t)