Integral Calculus: A problem

A Forecast about PSX-100 Pakistan Stock Exchange 100 Index

Pakistan's PSX-100 (formerly KSE-100) index will fall atleast 50%,  from 42,000 points in November 2016 to 21,000 points in 2 to 3 years time, i.e. 2018-2019. Investors, especially long-term long-only, need exercise great caution and may have to reallocate, shift, rebalance and  in the extreme case altogether exit the market, particularly if they have ridden the rally starting 10,000 points in mid-2010.