If we know that even function f (x) is monotonically increasing on [0, π], then the size relation among f (- π), f (π / 2) and f (- 2) is obtained

If we know that even function f (x) is monotonically increasing on [0, π], then the size relation among f (- π), f (π / 2) and f (- 2) is obtained

π/2