Wednesday, 21 October 2015

logarithms - How to solve exponents using log?



How can I solve an exponent in a equation using base 10 logarithm tables?
For an example,
a=bx
can be written as log10a=xlog10b

x=log10blog10a
After this point I can refer values for loga and logb from the table. From this point how can I solve to get x. Can I subtract values since log division is subtraction??? Or should I take antilog. I'm Kinda stuck here Can Anyone help?


Answer



It seems like you're pretty much done. For example, let's say you've found log10b=6 and log10a=2. Then x=62=3.


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