Differentiating... (1 Viewer)

[tonyharrison]

<br>When using the quotient or product or whatever rule, do you have to specify which term you're calling 'u' and which 'v' or if you just write the rule, then sub in it's fine?
<br>Just wondering =)

 

[Fortify]

Yes, when it's like x + 2 / x - 1 for quotient rule.

u is always the top (x+2).

v is always the bottom (x-1).

It doesn't matter for product rule.

 

[bmn]

...you have to write what u and v =?
I've always just written it straight out, as in (5x^2-10x)/x^4

I have no idea which one is u and which ones is v, or the rule itself.

 

[tonyharrison]

Yes, when it's like x + 2 / x - 1 for quotient rule.

u is always the top (x+2).

v is always the bottom (x-1).

It doesn't matter for product rule.

<br>Yeah i knowww u is always top and v is always bottom, THAT'S why i was wondering if you need to state that =)
<br>But probs better to be on the safe side if your marker's a retard
<br>Thanks!

 

[ninetypercent]

u dont have to, however, it's a good idea that u do.

i dont write it, lol

 

[annabackwards]

Nah you don't need to, but i usually write it above/below/next to the term anyway.

Do be careful when using the quotient rule