Prove that the function f(x)=x2+2 is strictlyincreasing in the interval (2, 7) and strictlydecreasing in the interval (−2, 0).

Prove that the function $f (x) = x^{2} + 2$ is strictly
increasing in the interval (2, 7) and strictly
decreasing in the interval (−2, 0).

Matching exercise

Match the items on the right to the items on the left.

Step - 1

Step - 2

Step - 3