Follow Slashdot stories on Twitter


Forgot your password?
DEAL: For $25 - Add A Second Phone Number To Your Smartphone for life! Use promo code SLASHDOT25. Also, Slashdot's Facebook page has a chat bot now. Message it for stories and more. Check out the new SourceForge HTML5 internet speed test! ×
User Journal

Journal Journal: yo

If f'(x) > 0 on an interval, then f is increasing on that interval
If f(x) 0 on an interval, then f is decreasing on that interval
d/dx (constant number) = 0
d/dx (x) = 1
d/dx (x^n) = nx^(n-1)
If C is constant and f is differentiable, d/dx (cf(x)) = c*d/dx(f(x))
if f and g are differentiable, d/dx (f(x) + (g(x)) = d/dx (f(x)) + d/dx(g(x))
if f and g are differentiable, d/dx (f(x) - (g(x)) = d/dx (f(x)) - d/dx(g(x))
d/dx(e^x) = e^x
d/dx(f(x)g(x)) = f(x) d/dx(g(x)) + g(x)d/dx(f(x))
d/dx(f(x)/g(x)) = g(x)d/dx(f(x)) - f(x)d/dx(g(x))/(g(x)^2
d/dx(a^x) = a^x(ln(a))
if f and g are both differentiable and F(x) = f(g(x)), then F' = f'(g(x))*g(x)

dy/dx= dy/dt/dx/dt

two curves are called orthogonal if at each point of intersection, d/dx(f) is the inverse reciprical of d/dx(g)

d/dx(log(x)/log(a) = 1/x*ln(a)
d/dx(ln(x)) = 1/x
TANGENT LINE: y =f(a) + f'(a)(x-a)

AVERAGE RATE OF CHANGE (over a,b) = f(b)-f(a) / b -a
INSTANT RATE OF CHANGE = y2-y1 / x2-x1

User Journal

Journal Journal: Foes

In case you're wondering why I hate you...
Generally if you're on my foes you are either a troll or you have a signature that says "I'm an idiot"

For example I recently saw a signature that said "Yes, I'm going to be a Geek Missionary" (with "geek missionary" as a link.) I thought hah. I bet he's going to be a Linux Missionary or something
but no, he's actually going to be a missionary for Jesus Christ, May he burn in the fires of hell forever.

Immidiatly made it to my foes list.
I check the sigs of these people occasionally, and if they ever change, the person get's removed from the list.
Scumbag above probably won't, since his mail is hosted by, I swear I'm not kidding,

Slashdot Top Deals

C'est magnifique, mais ce n'est pas l'Informatique. -- Bosquet [on seeing the IBM 4341]