Let p be a distance from the center of symmetry of the image c of the function f (x) = cos (Wx + a). If the minimum value from P to the axis of symmetry of the image C is π / 4, we can get the following formula: Let p be a distance from the center of symmetry of the image c of the function f (x) = cos (Wx + a). If the minimum value from P to the axis of symmetry of the image C is π / 4, then the minimum positive period of F (x) is?

T/4=π/4
T=π
Knowledge of drawing
The minimum value of the axis of symmetry from point P to image C is
T/4

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