1.

 Calculate log.  a) -log ( 1.1001×10 -7) .please explain stepwise  to  solve this problem.

Answer»

We have -log ( 1.1001×10-7)

By logarithm product rule i.e 

loga(m.n) = loga m + loga n

we have, 

= -(log1.1001 + log10-7)

= -log1.1001 - log10-7

= - 0.0414 + 7log10

= -0.0414 + 7

= 6.9586



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