## Error message

• Deprecated function: Methods with the same name as their class will not be constructors in a future version of PHP; ctools_context has a deprecated constructor in require_once() (line 127 of /home/tusa/public_html/sites/all/modules/ctools/ctools.module).
• Deprecated function: Methods with the same name as their class will not be constructors in a future version of PHP; ctools_context_required has a deprecated constructor in require_once() (line 127 of /home/tusa/public_html/sites/all/modules/ctools/ctools.module).
• Deprecated function: Methods with the same name as their class will not be constructors in a future version of PHP; ctools_context_optional has a deprecated constructor in require_once() (line 127 of /home/tusa/public_html/sites/all/modules/ctools/ctools.module).
• Deprecated function: Methods with the same name as their class will not be constructors in a future version of PHP; panels_cache_object has a deprecated constructor in require_once() (line 127 of /home/tusa/public_html/sites/all/modules/ctools/ctools.module).

# Derivative of the Natural Log Function

Video Lesson (Calculus)

## Video Tutorial: Derivative of the Natural Log Function

Calculus: Derivative of the Natural Logarithm Function
In this free video tutorial, learn how to calculate the derivative of the natural log function. The video begins with a review of exponential functions and the natural logarithmic function. It then explains composite functions that include natural log functions. To find the derivative of one of these composite functions, like e^(3x^2), you must combine the fact that the derivative of e^x is e^x and the chain rule.