Let f:r-r be a continuous function satisfying x+ f)dt-e'-1 for all xer. then the set fxe r: 1sf)s2} is the interval (a) log 2, log 31 (c)fe-1, e-) (b) 2log 2, 3

Let f:R-R be a continuous function satisfying x+ f)dt-e'-1 for all xeR. Then the set fxe R: 1sf)s2} is the interval (A) log 2, log 31 (C)fe-1, e-) (B) 2log 2, 3log 3 (D) [0,1 MA-2/28