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April 15, 2026, 02:47:21 pm

Author Topic: Five Equations - Five Unknowns  (Read 2827 times)  Share 

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generalkorn12

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Five Equations - Five Unknowns
« on: February 29, 2012, 07:30:46 pm »
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Hi,

Does anyone know if there are any exercises in Essential, Heineman or the Math Quest that has exercises to do with five equatons and five unknowns?

Or know of a website with this? I try googling it, but it  comes up with nothing :/

rife168

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Re: Five Equations - Five Unknowns
« Reply #1 on: February 29, 2012, 07:35:18 pm »
+5
Why do you want to do that to yourself?!

I can make one up for you if you want..
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pi

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Re: Five Equations - Five Unknowns
« Reply #2 on: February 29, 2012, 07:45:04 pm »
+1
Why do you want to do that to yourself?!


+1

rife168

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Re: Five Equations - Five Unknowns
« Reply #3 on: February 29, 2012, 08:07:39 pm »
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Ok, here goes...

       ---(1)

              ---(2)

               ---(3)

                          ---(4)

                            ---(5)

good luck...
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Truck

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Re: Five Equations - Five Unknowns
« Reply #4 on: February 29, 2012, 08:38:21 pm »
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I was going to type on my CAS: solve(Equation1 and Equation 2...Equation 5,a,b,c,d,e".

But it was too much effort to even write that out in this box, let alone type it in my CAS or god forbid actually do it by hand :P.
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paulsterio

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Re: Five Equations - Five Unknowns
« Reply #5 on: February 29, 2012, 08:43:24 pm »
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put it into an augmented matrix and use the rref function on the cas

(reduced row echelon form) - you really don't need to understand what it does or what the process is, but it's faster than typing in all the equations.

pi

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Re: Five Equations - Five Unknowns
« Reply #6 on: February 29, 2012, 08:44:41 pm »
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put it into an augmented matrix and use the rref function on the cas

I'll translate this into English for all the "normal" Methods students: "Don't do this question" :P

yawho

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Re: Five Equations - Five Unknowns
« Reply #7 on: February 29, 2012, 08:59:31 pm »
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put it into an augmented matrix and use the rref function on the cas

(reduced row echelon form) - you really don't need to understand what it does or what the process is, but it's faster than typing in all the equations.
are you referring to fletch-j's equations?

oliverk94

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Re: Five Equations - Five Unknowns
« Reply #8 on: February 29, 2012, 09:02:40 pm »
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dah fuck is this? would you ever have to do this in methods?

paulsterio

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Re: Five Equations - Five Unknowns
« Reply #9 on: February 29, 2012, 09:04:13 pm »
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are you referring to fletch-j's equations?

yes :)

dah fuck is this? would you ever have to do this in methods?

short answer, no :)

pi

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Re: Five Equations - Five Unknowns
« Reply #10 on: February 29, 2012, 09:05:20 pm »
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put it into an augmented matrix and use the rref function on the cas

(reduced row echelon form) - you really don't need to understand what it does or what the process is, but it's faster than typing in all the equations.
are you referring to fletch-j's equations?

I think he is, but I doubt it would work (from my minimal knowledge on rref)

dah fuck is this? would you ever have to do this in methods?

Nah, its just for "fun"

yawho

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Re: Five Equations - Five Unknowns
« Reply #11 on: February 29, 2012, 09:06:46 pm »
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dah fuck is this? would you ever have to do this in methods?
yes
f(x)=ax^4+bx^3+cx^2+dx+e, find a, b, c, d and e from given info.

pi

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Re: Five Equations - Five Unknowns
« Reply #12 on: February 29, 2012, 09:08:35 pm »
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dah fuck is this? would you ever have to do this in methods?
yes
f(x)=ax^4+bx^3+cx^2+dx+e, find a, b, c, d and e from given info.

I don't think Methods ever goes beyond 3 equation in an exam though?

I know its not on the study design, but I think they just stop at 3 (as 4 isn't really testing any more skills than 3 - esp in a tech active exam)

oliverk94

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Re: Five Equations - Five Unknowns
« Reply #13 on: February 29, 2012, 09:13:01 pm »
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dah fuck is this? would you ever have to do this in methods?
yes
f(x)=ax^4+bx^3+cx^2+dx+e, find a, b, c, d and e from given info.
LOL

yawho

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Re: Five Equations - Five Unknowns
« Reply #14 on: February 29, 2012, 09:24:53 pm »
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are you referring to fletch-j's equations?

yes :)

dah fuck is this? would you ever have to do this in methods?

short answer, no :)
No, those equations are not linear sim. equations

yes, they are required.