InterviewSolution
`f(X)=1"for" |x|=1 ``f(x)={{:(1",", "for" |x| gt 1),(-1"m,", "for" |x| lt 1):}``f(x){{:(1",", "for" |x| gt 1),(-1"m,", "for" |x| le 1):}`f is not defined for any VALUE of 'x'
Your experience on this site will be improved by allowing cookies. Read Cookie Policy