Hey /wsr/

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Hey /wsr/

I need help understanding how I would go about solving these 2 math problems

Ty

>>

>>42844

2nd one isn't that bad. When is it due?

>>

in 26 hours

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>>42848

I'll try the bottom one, I have no idea what the top one is doing.

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>>42844

In the second problem you have a third equation, since the sum of the elements is equal to 1 translates to

x + y + z = 1 (3)

(3) and (2) give

2x = 4

x = 2

(1) gives

2 x + 3 y = 0

3y = - 4

y = -4/3

(2) gives

x - y - z = 3

2 + 4/3 - z = 3

z = 1/3

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>>42857

Oh yeah, of course.

That was quite easy then :P

Thanks

>>

>>42844

Ax = 0 implies

x+ay=0

bx+y=0

parametric equation for the line is (8t,-5t)

so

8t-5at=0

8bt-5t=0

then a=8/5 b=5/8

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>>42857

Dammit, I was on z when I saw this.

>>

I tried putting it in a matrix and putting it in row-reduced echelon form, but failed at what should've been a simple task, sorry. Plugging this into a calculator or matlab-like software would solve it for you, though it seems it has already been solved.

[ 2 3 0 0]

[ 1 -1 -1 3]

[ 1 1 1 1]

Thread images: 2

Thread DB ID: 469617

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