Let f:rr be a continuous function satisying x+ff)d=e-1 for all xe r. then the set fxe r: 1sf(x)s2} is the interval (4) log 2 log 3] c)le-1,é-1) (b) [2log 2, 3lo

Let f:RR be a continuous function satisying x+ff)d=e-1 for all xe R. Then the set fxe R: 1Sf(x)s2} is the interval (4) log 2 log 3] C)le-1,é-1) (B) [2log 2, 3log 31 (D) [0, e1