the derivative gives you the slope of the tangent, then use the (x,y) value in point slope format y-y1=m(x-x1)Bevo wrote:
yer. the TA went over it before we turned it in (lul), because nobody really understood. Basically I was just missing a substitution equation that let me exchange the equals for a inequality.
im supposed to be able to solve a tangent line problem for my midterm tomorrow, but I dunno what that is anymore. Im looking through my notes and its a big clusterfuck. sounds like its just a derivate problem at a certain point? that sounds right? i already put a little smiley face next to it when i was studying earlier.
dy/dx (x^2)+4x+643626227427475163506423155790862152150654231 = 2x+4Hurricane2k9 wrote:
Someone teach me calculus plz
I figured, couldnt find any real examples. Dunno why that wasnt lumped in with the rest of the derivative stuff.S.Lythberg wrote:
the derivative gives you the slope of the tangent, then use the (x,y) value in point slope format y-y1=m(x-x1)Bevo wrote:
yer. the TA went over it before we turned it in (lul), because nobody really understood. Basically I was just missing a substitution equation that let me exchange the equals for a inequality.
im supposed to be able to solve a tangent line problem for my midterm tomorrow, but I dunno what that is anymore. Im looking through my notes and its a big clusterfuck. sounds like its just a derivate problem at a certain point? that sounds right? i already put a little smiley face next to it when i was studying earlier.
cheers anyway, off to study for my music midterm (back to back tomorrow, fuck me)
nice, engineering statistics exam tuesday, haven't been to class since the last examBevo wrote:
I figured, couldnt find any real examples. Dunno why that wasnt lumped in with the rest of the derivative stuff.S.Lythberg wrote:
the derivative gives you the slope of the tangent, then use the (x,y) value in point slope format y-y1=m(x-x1)Bevo wrote:
yer. the TA went over it before we turned it in (lul), because nobody really understood. Basically I was just missing a substitution equation that let me exchange the equals for a inequality.
im supposed to be able to solve a tangent line problem for my midterm tomorrow, but I dunno what that is anymore. Im looking through my notes and its a big clusterfuck. sounds like its just a derivate problem at a certain point? that sounds right? i already put a little smiley face next to it when i was studying earlier.
cheers anyway, off to study for my music midterm (back to back tomorrow, fuck me)
I was looking at my flowchart (seriously, there's a flowchart we have to follow as ME majors) and I have to take that one in a few semesters. -_- 4 semesters of history/government as well, fucking state mandated bullshit.S.Lythberg wrote:
nice, engineering statistics exam tuesday, haven't been to class since the last exam
AP tested out of that shit, stats is less intuitive than you'd think sometimes, and more at others...Bevo wrote:
I was looking at my flowchart (seriously, there's a flowchart we have to follow as ME majors) and I have to take that one in a few semesters. -_- 4 semesters of history/government as well, fucking state mandated bullshit.S.Lythberg wrote:
nice, engineering statistics exam tuesday, haven't been to class since the last exam
I didn't get credit from IB exams. Even if I did AP I'd still have 2 semesters of it at least.S.Lythberg wrote:
AP tested out of that shit, stats is less intuitive than you'd think sometimes, and more at others...Bevo wrote:
I was looking at my flowchart (seriously, there's a flowchart we have to follow as ME majors) and I have to take that one in a few semesters. -_- 4 semesters of history/government as well, fucking state mandated bullshit.S.Lythberg wrote:
nice, engineering statistics exam tuesday, haven't been to class since the last exam
I tried taking AP US history (without taking the class/studying) and got a 1.
lol, I got a 5. I have to take some non-western class next semester (won't have time senior year). I'm trying to decide which sounds the least awful.Bevo wrote:
I didn't get credit from IB exams. Even if I did AP I'd still have 2 semesters of it at least.S.Lythberg wrote:
AP tested out of that shit, stats is less intuitive than you'd think sometimes, and more at others...Bevo wrote:
I was looking at my flowchart (seriously, there's a flowchart we have to follow as ME majors) and I have to take that one in a few semesters. -_- 4 semesters of history/government as well, fucking state mandated bullshit.
I tried taking AP US history (without taking the class/studying) and got a 1.
well here we go ... ln(k1/k2) = Ea/R (1/T2 - 1/T1) ... find T2 please
simple algebra paltwinke228 wrote:
well here we go ... ln(k1/k2) = Ea/R (1/T2 - 1/T1) ... find T2 please
ln(k1/k2) * R/Ea = 1/T2 - 1/T1
ln(k1/k2) * R/Ea + 1/T1 = 1/T2
T2 = 1/[ln(k1/k2) * R/Ea + 1/T1]
ok thanks.S.Lythberg wrote:
simple algebra paltwinke228 wrote:
well here we go ... ln(k1/k2) = Ea/R (1/T2 - 1/T1) ... find T2 please
ln(k1/k2) * R/Ea = 1/T2 - 1/T1
ln(k1/k2) * R/Ea + 1/T1 = 1/T2
T2 = 1/[ln(k1/k2) * R/Ea + 1/T1]
If anyone posts in here looking for help ref: Home Economics/Catering/Cookery - Please someone come and get me. I dunno if you all get access to that subject but dont be put off if ya male. I reckon the subject I use the most is as above, I cook just about every day. I write and read, add up etc, but when was the last time I needed to know the longest River in Africa, or what year The 1st world war kicked off.
Id love to help some of you but Im shite at formula's
Id love to help some of you but Im shite at formula's
The hell... How did I get 1, -5 when the answer is x= -1 or 5 for x2-4x-5=0? I thought I did the quadratic formula and all right...
Last edited by Noobpatty (2009-10-15 15:54:02)
Whoops, nevermind....I didn't negate the "B" value...
Can someone tell me the error in
I don't see what's wrong
I don't see what's wrong
I don't see how it became n-7=-3n+1.Noobpatty wrote:
Can someone tell me the error in
http://i151.photobucket.com/albums/s151 … ty/wtf.jpg
I don't see what's wrong
should be -n+7 = -3n+1, doesn't matter though it's the same as n-7 = 3n-1
Last edited by The Sheriff (2009-11-01 11:21:33)
So n can only turn out to be -3?
But surgeons,
-n+7=-3n+1 <=> n-7=3n-1
thus there'll only be one answer.
I'd love to help, but I dunno what |a+b| means.
-n+7=-3n+1 <=> n-7=3n-1
thus there'll only be one answer.
I'd love to help, but I dunno what |a+b| means.
what? doesn't |n-7| = n+7???
im confused lmao
im confused lmao
Uhm basically we're doing something with absolute values and such.Jenspm wrote:
But surgeons,
-n+7=-3n+1 <=> n-7=3n-1
thus there'll only be one answer.
I'd love to help, but I dunno what |a+b| means.
So if |a+b| = 7, for example, then a+b could = 7 or -7 because the absolute value, even if negative, is 7.
Plug n back into the equation.Noobpatty wrote:
Can someone tell me the error in
http://i151.photobucket.com/albums/s151 … ty/wtf.jpg
I don't see what's wrong
Only n=2 satisfies the problem.
Last edited by Arc (2009-11-01 11:44:14)
oh, wow....hmm I guess it's kinda a necessity to check the solution...Arc wrote:
Plug n back into the equation.Noobpatty wrote:
Can someone tell me the error in
http://i151.photobucket.com/albums/s151 … ty/wtf.jpg
I don't see what's wrong
Only n=2 satisfies the problem.
Oryte, I remember now.Noobpatty wrote:
Uhm basically we're doing something with absolute values and such.Jenspm wrote:
But surgeons,
-n+7=-3n+1 <=> n-7=3n-1
thus there'll only be one answer.
I'd love to help, but I dunno what |a+b| means.
So if |a+b| = 7, for example, then a+b could = 7 or -7 because the absolute value, even if negative, is 7.
As you said, an absolute value has to be positive. -3 doesn't give a positive absolute value.
edit- lulz, Arc just said the same thing... I think.
Last edited by Jenspm (2009-11-01 11:57:01)
Yep.Jenspm wrote:
edit- lulz, Arc just said the same thing... I think.