Verify by calculation that this root lies between 1 and $$$1.5$$$. ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................ ........................................................................................................................................................

Mathematics

IGCSE&ALevel

CAIE

Exam No：9709_s21_qp_33 Year：2021 Question No：6(b)

Answer:

Calculate values of a relevant expression or pair of expressions at $x=1$ and $x=1.5$
Complete the argument correctly with correct calculated values

3.6.1 locate approximately a root of an equation, by means of graphical considerations and/or searching for a sign change