Well, you should know how to use ALL of the derivative methods you encounter, so you don't have to re-derive them each time you need them. On the plus side: if you take enough math courses learning them will be natural. Good luck in your studies...
#5
CaffeineJunky
26
0
Use the product rule or the quotient rule.
#6
Maxwellkid
69
0
Isn't derivative of cotangent equal to csc squared?
#7
jgens
Gold Member
1,575
50
Why don't you try deriving it to check ;-)
#8
Maxwellkid
69
0
Where do i start to derive it?
#9
jgens
Gold Member
1,575
50
Alright, I'll start you off . . .
cot(x) = \frac{cos(x)}{sin(x)}[/itex]<br />
<br />
\frac{d(cot(x))}{dx} = \frac{d}{dx} \left (\frac{cos(x)}{sin(x)} \right )<br />
<br />
Now, can you remember the rule for differentiating the quotient of two functions?