• Congratulations to the Class of 2024 on your results!
    Let us know how you went here
    Got a question about your uni preferences? Ask us here

Beginner calculus question... (1 Viewer)

Sy123

This too shall pass
Joined
Nov 6, 2011
Messages
3,730
Gender
Male
HSC
2013
There's an in built editor here? I dont see the 'function' button that they use to have....

Well you have to bound the commands with the commands

[$tex] and at the end [/tex$]

There are NO dollar signs here. I just did that otherwise it will think Im writing latex
 

Peeik

Member
Joined
Mar 12, 2009
Messages
274
Location
Sydney
Gender
Male
HSC
2009
Well you have to bound the commands with the commands

[$tex] and at the end [/tex$]

There are NO dollar signs here. I just did that otherwise it will think Im writing latex
ahhhhh i see what you mean now.....and you just put the latex coding in between there?
 
Joined
Mar 18, 2012
Messages
108
Location
Kandahar, Islamic Republic of Afghanistan
Gender
Male
HSC
2013
Uni Grad
2017
For y=x^3 find dy/dx at x=1??

Don't use first principles. It's slow, inefficient and prone to mistakes (especially when working with higher powers).
Use this rule: if f(x)=x^n then f'(x)=nx^(n-1)

Now...
y=x^3
dy/dx = 3x^2 and now sub in x=1
= 3 X 1^2
= 3
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top