linear phase notch filter matlab
@omar: I don't know how you obtained your expression for the 'h' coefficients but it's wildly incorrect.  Study the MATLAB documentation regarding the 'firpm()' and 'fir1()' filter design commands.  Experiment, experiment, and experiment again until you understand those commands. Then when you try to use one of those commands to design your desired filter you'll find that your filter needs a truly HUGE number of taps.