serious answers only
f(x)=\frac{12^{x}-4^{x}-3^{x}+1}{1-cos2x} for x\neq 0 is continuous at x = 0

serious answers only
f(x)=\frac{12^{x}-4^{x}-3^{x}+1}{1-cos2x} for x\neq 0 is continuous at x = 0

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