Find the value of r?

50r = (e^20r)-1

 

 

Please do solve it as you do equation.

This equation is definitely not a linear equation as the expansion of exponential term involve higher powers of variable r . Hence the equation may have multiple roots.

To solve this equation proceed as:

50r = e^20r  -  1

or 50r + 1 = e^20r

Take natural log of both the sides and proceed