VJC/2013/Prelim/P1/Q1

(a)Without using a calculator, solve the inequality

(b) Deduce the range of values of x that satisfies.

Solutions: (a): x≤-6 or 1≤x<3 or x>3

                 (b): 0<x≤e-6 or e≤x<e3 or x>e3

(a)

(b)

lnx ≤ -6              

x ≤ e-6 

 1≤ lnx <3

 e≤x<e3 

lnx>3

 x>e3

 

 

 

 

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