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November 01, 2025, 10:17:17 am
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Author Topic: How I got 2 as minimum no.of zero in VCAA 2011 matrices q9  (Read 1865 times)  Share 

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j4st_an2

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How I got 2 as minimum no.of zero in VCAA 2011 matrices q9
« on: November 04, 2011, 07:57:21 pm »
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Gotta use th   Matrix identity form. >>  1 0 0          1  1     use 1s or any other number. as element in matrix B. TRIAL AND ERROR
                                                              0 1 0    X    1  1
                                                              0 0 0          1  1
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Natters

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Re: How I got 2 as minimum no.of zero in VCAA 2011 matrices q9
« Reply #1 on: November 04, 2011, 08:00:07 pm »
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really it doesnt matter which rows you put matrix A's  1's in, its just whether you should use them both in one row or in different ones, only two trials required surprisingly
im still pretty sure theres a quicker way than that though, somehow
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j4st_an2

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Re: How I got 2 as minimum no.of zero in VCAA 2011 matrices q9
« Reply #2 on: November 04, 2011, 08:04:17 pm »
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lol ur right. trial and error i guess.
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xXjAmEZXx

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Re: How I got 2 as minimum no.of zero in VCAA 2011 matrices q9
« Reply #3 on: November 04, 2011, 08:27:38 pm »
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i did trial and error, putting 2 1's in each row then putting individual 1's in 2 rows. i had 50 minutes leftover in the exam so i had time and out of the combinations i did 2 was the minimum. im sure theres probably a more mathematical and faster way though.
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tha boss

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Re: How I got 2 as minimum no.of zero in VCAA 2011 matrices q9
« Reply #4 on: November 04, 2011, 08:39:22 pm »
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what happened to the seven elements are zero it didnt make sense? a 3x3 matrix?
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Keo

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Re: How I got 2 as minimum no.of zero in VCAA 2011 matrices q9
« Reply #5 on: November 04, 2011, 08:42:20 pm »
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Quote from: tha boss on November 04, 2011, 08:39:22 pm
what happened to the seven elements are zero it didnt make sense? a 3x3 matrix?

there are 9 elements in a 3x3 matrix, 7 of these elements are 0
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tha boss

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Re: How I got 2 as minimum no.of zero in VCAA 2011 matrices q9
« Reply #6 on: November 04, 2011, 08:43:32 pm »
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Quote from: Keo on November 04, 2011, 08:42:20 pm
Quote from: tha boss on November 04, 2011, 08:39:22 pm
what happened to the seven elements are zero it didnt make sense? a 3x3 matrix?

there are 9 elements in a 3x3 matrix, 7 of these elements are 0
yea confused the jesus out of me fkkk i picked 0
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Keo

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Re: How I got 2 as minimum no.of zero in VCAA 2011 matrices q9
« Reply #7 on: November 04, 2011, 08:45:37 pm »
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Quote from: tha boss on November 04, 2011, 08:43:32 pm
Quote from: Keo on November 04, 2011, 08:42:20 pm
Quote from: tha boss on November 04, 2011, 08:39:22 pm
what happened to the seven elements are zero it didnt make sense? a 3x3 matrix?

there are 9 elements in a 3x3 matrix, 7 of these elements are 0
yea confused the jesus out of me fkkk i picked 0

haha dw man, next exam!
just wondering you go Keysborough secondary college?
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2010: Health Human Development, Cisco
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tha boss

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Re: How I got 2 as minimum no.of zero in VCAA 2011 matrices q9
« Reply #8 on: November 04, 2011, 09:15:44 pm »
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Quote from: Keo on November 04, 2011, 08:45:37 pm
Quote from: tha boss on November 04, 2011, 08:43:32 pm
Quote from: Keo on November 04, 2011, 08:42:20 pm
Quote from: tha boss on November 04, 2011, 08:39:22 pm
what happened to the seven elements are zero it didnt make sense? a 3x3 matrix?

there are 9 elements in a 3x3 matrix, 7 of these elements are 0
yea confused the jesus out of me fkkk i picked 0

haha dw man, next exam!
just wondering you go Keysborough secondary college?
yea
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Natters

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Re: How I got 2 as minimum no.of zero in VCAA 2011 matrices q9
« Reply #9 on: November 04, 2011, 09:57:03 pm »
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random questions with no follow up <3
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Dominatorrr

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Re: How I got 2 as minimum no.of zero in VCAA 2011 matrices q9
« Reply #10 on: November 04, 2011, 10:11:28 pm »
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This is one of the 2 questions I derped, I accidentally put 8 0's in the 3 by 3 matrix instead of 7, wasn't thinking straight at all, fairly disappointed. So because of this, I got D = 4 instead.
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Natters

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Re: How I got 2 as minimum no.of zero in VCAA 2011 matrices q9
« Reply #11 on: November 04, 2011, 10:26:46 pm »
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little mistakes like that are so costly in further
that's literally like study score minus one, just because of that
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Furbob

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Re: How I got 2 as minimum no.of zero in VCAA 2011 matrices q9
« Reply #12 on: November 04, 2011, 11:06:23 pm »
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yeah I did what the OP did, but I used x's instead of 1's

I did the same for the goat question as well!
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