Author Topic: What do they mean? (Read 881 times) Tweet Share

kenhung123 · « **on:** July 14, 2010, 05:38:47 pm »

Can someone explain what they mean in the note?
It says {x:x>0} when r=1/2 but we can root 0 can't we?

TrueTears · « **Reply #1 on:** July 14, 2010, 06:07:29 pm »

$\int 0 dx = 0$

trivial case, so we can ignore

yejiawen · « **Reply #2 on:** July 14, 2010, 07:34:45 pm »

sorry to barge in, but it suited with your topic title xD

What does f''(x) indicate?

i know f'(x) is dy/dx

Thanks in advance ^^

kenhung123 · « **Reply #3 on:** July 14, 2010, 07:37:06 pm »

Second derivative

TrueTears · « **Reply #4 on:** July 14, 2010, 07:44:46 pm »

f''(x) = f^2(x) = d^2dy/dx^2

m@tty · « **Reply #5 on:** July 14, 2010, 08:36:32 pm »

What's the middle one TrueTears?

TrueTears · « **Reply #6 on:** July 14, 2010, 08:37:29 pm »

in latex:

$f^2(x)$

this notation is often used when using taylor expansion [ $f^n(x)$ to represent the nth derivative]

QuantumJG · « **Reply #7 on:** July 14, 2010, 09:10:19 pm »

Can someone explain what they mean in the note?
It says {x:x>0} when r=1/2 but we can root 0 can't we?

I'm confused. What are you asking?

kenhung123 · « **Reply #8 on:** July 14, 2010, 09:11:28 pm »

You know the attached picture, I am unsure what they are trying to say in the note:

m@tty · « **Reply #9 on:** July 14, 2010, 09:43:30 pm »

in latex:

$f^2(x)$

this notation is often used when using taylor expansion [ $f^n(x)$ to represent the nth derivative]

Ahh, ok. Just never seen that before. Thanks.

Martoman · « **Reply #10 on:** July 14, 2010, 10:16:01 pm »

When talking about iterative functions or n fold composites in math comps you'll see these bad boys everywhere.

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