can anyone help me calculus?

what is the answer of dy/dx ln(e^(3x)) ?

cuz I thought the answer is 3/e^(3x)

but the answer is 3. 

so please help me hahahaha 

[행1]

Wait

[글쓴행]

aww you are pretty fast! okay

[행2]

You miss this
(e^3x)' is 3e^3x

[글쓴행]

omg i'm so dumb... thank you so much!!!!

[행3]

My pleasure :)
I took exam about this last monday haha so I can remember this

[글쓴행]

3에게
Great! are you also taking AP calculus?

[행4]

글쓴이에게
Yes
But this is sooo hard and confusing :(

[글쓴행]

hahahaha for me too....

[행5]

this is exactly what I'm learning in college but I have no idea how to do it :(