Edexcel IAL Maths - P2 - January 2023

[@gustybot]

great video! i have a slight question, in parts like 33:10, how do i know if i should flip the sign or not?

[@StateOfMath]

Hi there. In this part you had to divide by ln(0.8) which is negative, and when you divide by a negative number you flip the inequality sign. In general • if 0< x0 Hope this helps.

[@gustybot]

@@StateOfMath thanks!