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Author Topic: Need math help for something: Base e bullshit  (Read 4540 times)

TTC

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Need math help for something: Base e bullshit
« on: February 16, 2010, 06:14:03 PM »
I havent done this shit for like 15 years, can someone refresh my memory?

4e^(-.10469x0.5) + 4e^(-.10536x1) + 104e^(-Rx1.5) = 96


answer is .10681


For the life of me I can't remember how to do this shit.


Bah fixed a slight typo
« Last Edit: February 17, 2010, 09:49:40 AM by TTC »
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smithshaw

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Re: Need math help for something: Base e bullshit
« Reply #1 on: February 16, 2010, 10:35:26 PM »
You sure those numbers are right?  I keep getting .0899 but i'm probably doing something wrong.
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glustic

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Re: Need math help for something: Base e bullshit
« Reply #2 on: February 16, 2010, 10:42:03 PM »
That shit is way over my head. Fuck that
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Jorsher

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Re: Need math help for something: Base e bullshit
« Reply #3 on: February 16, 2010, 10:56:26 PM »
lol, haven't done that shit in ... 7 years

Goddamn I need to get back to school.
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Adam Lofton

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Re: Need math help for something: Base e bullshit
« Reply #4 on: February 16, 2010, 11:23:39 PM »
Math is hard, let's go get icecream.
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t_cel_t

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Re: Need math help for something: Base e bullshit
« Reply #5 on: February 16, 2010, 11:26:42 PM »
just remember that e is a constant, like 2.71 or something close to it, are you supposed to solve for R?
write the problem properly and get back.
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malone labe

I think all cop cars need to have turbo. nbspnbsp Then they would understand the necessity of putting your foot down and how uncontrollable the urge is to fucking rail on that shit.

t_cel_t

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Re: Need math help for something: Base e bullshit
« Reply #6 on: February 16, 2010, 11:30:08 PM »
also remember that 'x' does not mean 'multiply' use the fucking asterisk to show multiplication '*'

is this the problem?
4*e^(-.10469*0.5) + 4*e^(-1.10536*1) + 104*e^(-R*1.5) = 96
solve for R?
i get R = .0899033
« Last Edit: February 16, 2010, 11:31:48 PM by t_cel_t »
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malone labe

I think all cop cars need to have turbo. nbspnbsp Then they would understand the necessity of putting your foot down and how uncontrollable the urge is to fucking rail on that shit.

patsmx5

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Re: Need math help for something: Base e bullshit
« Reply #7 on: February 16, 2010, 11:35:28 PM »
Assuming "x" is multiply, and "R" is your variable, I get 0.0277719.
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Quote: Originally Posted by Adam Hopkins
There is no such thing as too much boost. You could have too little rod, piston, or sleeve. But never too much boost.

TTC

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Re: Need math help for something: Base e bullshit
« Reply #8 on: February 16, 2010, 11:39:03 PM »
FML this shit.
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patsmx5

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Re: Need math help for something: Base e bullshit
« Reply #9 on: February 16, 2010, 11:49:00 PM »
You mistyped the problem, it should read.

4*e^(-.10469*0.5) + 4*e^(-1.10536*0.1) + 104*e^(-R*1.5) = 96


answer is .1066694
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Quote: Originally Posted by Adam Hopkins
There is no such thing as too much boost. You could have too little rod, piston, or sleeve. But never too much boost.

smithshaw

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Re: Need math help for something: Base e bullshit
« Reply #10 on: February 16, 2010, 11:51:29 PM »
That makes sense now.  I thought it was weird that he put the *1 in there.
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nock

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Re: Need math help for something: Base e bullshit
« Reply #11 on: February 17, 2010, 02:34:05 AM »
0.1066694955818

GraphCalc, fuck it.
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bigwig

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Re: Need math help for something: Base e bullshit
« Reply #12 on: February 17, 2010, 03:06:16 AM »
Quote from: TTC on February 16, 2010, 11:39:03 PM
FML this shit.

Write the fucking question correctly you dumb fuck and someone on here will help you.  Not to mention, you didn't say if you needed to show work, solve by hand, or what.  Otherwise, you punch the numbers into your damn graphic calculator and you can easily get a result.  Even on a TI83, you'd just set the problem up where X=R and Y=the equation.  Then find the 0 on the graph.  It would take 1 minute in total if you decided to jerk off for the first 50 seconds.
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t_cel_t

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Re: Need math help for something: Base e bullshit
« Reply #13 on: February 17, 2010, 03:23:41 AM »
that shit is just level 1 algebra
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malone labe

I think all cop cars need to have turbo. nbspnbsp Then they would understand the necessity of putting your foot down and how uncontrollable the urge is to fucking rail on that shit.

TTC

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Re: Need math help for something: Base e bullshit
« Reply #14 on: February 17, 2010, 09:50:34 AM »
Fixed a typo, its -.10536 not 1.1....

Pat can u show work?
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patsmx5

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Re: Need math help for something: Base e bullshit
« Reply #15 on: February 17, 2010, 10:29:42 AM »
turn on TI89
press home button
press F2, and select nSolve
Enter equation exactly as shown, using x as your variable. After entering the equation, type ,x)
Press enter
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Quote: Originally Posted by Adam Hopkins
There is no such thing as too much boost. You could have too little rod, piston, or sleeve. But never too much boost.

t_cel_t

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Re: Need math help for something: Base e bullshit
« Reply #16 on: February 17, 2010, 04:32:52 PM »
Quote from: patsmx5 on February 17, 2010, 10:29:42 AM
turn on TI89
press home button
press F2, and select nSolve
Enter equation exactly as shown, using x as your variable. After entering the equation, type ,x)
Press enter

anything other is a waste of time
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malone labe

I think all cop cars need to have turbo. nbspnbsp Then they would understand the necessity of putting your foot down and how uncontrollable the urge is to fucking rail on that shit.

bigwig

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Re: Need math help for something: Base e bullshit
« Reply #17 on: February 17, 2010, 04:36:26 PM »
He might be required to do a large portion by hand.  If he is asked to isolate the variable, he will have to change the e's into Logs.  I don't disagree it is a waste of time, but it might be what is required.
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