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If f(x)=(tan(pi/4-x))/(cot2x) for x!=pi/...

If `f(x)=(tan(pi/4-x))/(cot2x)` for `x!=pi/4,` find the value which can be assigned to `f(x)` at `x=pi/4` so that the function `f(x)` becomes continuous every where in `[0,pi/2]dot`

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