Is this the most difficult logarithm problem?

QuestionsCategory: MathematicsIs this the most difficult logarithm problem?
Raymond John Staff asked 3 months ago

Probably the most difficult logarithmic problem I ever encountered when I was O-level. It just looks simple like this:

`log r^2 = r/(25)`

It is obvious that the value of r = 100, but wait, can you show me the steps?

 

1 Answers
Best Answer
Mtaalamu answered 3 months ago

Hope the graphical method can help..Just set the two equations like this:
 
`log r^2 = r/(25)`
Let, `y_1 = log r^2 …(i)`
And `y_2 = x/(25) …(ii)`
Construct the table of values and you can see the point of intersection at r = 100