Question Number 104860 by ~blr237~ last updated on 24/Jul/20

(1−aT)(1−bT).....(1−yT)(1−zT)    ????

Answered by ~blr237~ last updated on 24/Jul/20

Just  to smile : if we remember the formula of the frequency   f=(1/T)  then  1−fT=0   And that product will be null

Commented by1549442205PVT last updated on 25/Jul/20

But you didn′t give  a=b=...=y=z=f  and  didn′t note that f is frequency of light  wave.Nobody can guess your idea!...