NCERT Example 16 - Relations and Functions

Question: If f(x) = cos x and g(x) = 3x² on R, find gof and fog. Show gof ≠ fog.

Answer: gof(x) = 3 cos² x; fog(x) = cos(3x²); gof ≠ fog.

Full step-by-step NCERT solution with diagrams on Something by Zero.

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