Monday 16 January 2017

LOGARITHMS 1C


If log3(10x + 7)=3; find x.

Solution

log3(10x + 7)=3

 (10x + 7)=33         
                                            
 10x + 7=27

10x = 27 – 7

10x =  20

10x202   
10      10

x = 2

Hence x = 2

TRY THIS…………….


If log3(5x + 1)=4; find x

No comments:

Post a Comment