4 let flx) = + 23-2, vxe(0, ). gence of the then (a) fhas exactly four positive real roots (b) fhas exactly three positive real roots (c)fhas unique positive re

4 Let flx) = + 23-2, Vxe(0, ). gence of the Then (A) fhas exactly four positive real roots (B) fhas exactly three positive real roots (C)fhas unique positive real root D) fhas exactly tyo positive real roots IP.T.O. 3