Sketch the graph of f(x) and use it to sketch f ' (x) on the same graph.

f(x)=4x

i'm drawing inside:) what i think so far :)

i think i know how to graph f(x)=4x, but not sure about f ' (x) :/ thanks!!

Question

Sketch the graph of f(x) and use it to sketch f ' (x) on the same graph.

f(x)=4x

i'm drawing inside:) what i think so far :)

i think i know how to graph f(x)=4x, but not sure about f ' (x) :/ thanks!!

anonymous · Answer

|dw:1392072113975:dw| is this one right? :/ if so, not sure about the f ' (x) :/

agent0smith · Answer

What's the derivative of f(x) = 4x?

f'(x) = 4

So graph a line y = 4.

anonymous · Answer

|dw:1392072326013:dw| ohh is that right now? :)

anonymous · Answer

just differentiate f(x)=4x
u get f'(x)=4
which is a horizontal line passes through y=4

if you want to observe that from the graph. Just check the slope of every point of f(x)=4x , it is 4 for all points
so that that you can plot for each value of x, a value of y that is 4..

anonymous · Answer

ahh okay awesome!! thanks!!! :D @agent0smith @ali_rami1990 :)