Help me out with this question please...

Question

praxer · Answer

Is it true that  x= e^lnx for all real values of x

anonymous · Answer

consider this f(x)=eln(sin(x)) f:R-->R. Can we write this function defination like this f(x)=x f:R-->R I think no because if we put x as any negative number in first function(function in first line) then there will no solution exist for this but if we put x as any negative number in second function then their will be a solution. So does it mean that eln(x)=x Is not true always. ln represent natural log wih base e. R represent set of all real numbers. Read more: http://www.physicsforums.com

anonymous · Answer

I dont take credit

praxer · Answer

@Saeeddiscover  What do you think ?... I am getting confused.

anonymous · Answer

go to the link

praxer · Answer

got it :)

kc_kennylau · Answer

Well ln(x) is undefined if x is negative

kc_kennylau · Answer

Do note that x=ln(e^x) for all real number x