The slope of the line tangent to the graph of y = 4x - x * ln(x) at the point (e,3e) is?
A) 3
B) 1/4
C) 2
D) 3e^2
differentiate y with respect to x and substitute in x=e.
If you still can't do it explain which bit is giving you trouble.
how do you substitute?
Show me what you have done?
+61 
