L e t f(x)=(1-tanx)/(4x-pi),x!=pi/4,x in...

`L e t` `f(x)=(1-tanx)/(4x-pi),x!=pi/4,x in [0,pi/2],` If`f(x)i s` continuous in `[0,pi/4],` then find the value of `f(pi/4)dot`

`1//2`

`-1//2`

`-1`

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