Friday 28 February 2014

LOGARITHMS B38

Evaluate the following giving your answer in standard form.

38.3 x 10-4
   4 x 10-20

Solution

38.3 x 10-4
         4 x 10-20

38.3  x   10-4
     4         10-20

=  9.575 x 10-4 –(-20)

=  9.575 x 10-4 + 20    

=  9.575 x 1016     


Hence   38.3 x 10-4   = 9.575 x 1016     

                 4 x 10-20

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