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Mathematics 25 Online
OpenStudy (anonymous):

Determine the location of the point (x,y,z) so that the condition(s) is (are) satisfied. xyz > 0

OpenStudy (amistre64):

theres only one point?

OpenStudy (amistre64):

x>0 y>0 z>=

OpenStudy (amistre64):

z>0 laptop keyboard has issues lol

OpenStudy (anonymous):

only one point

OpenStudy (amistre64):

1,1,1 is one point

OpenStudy (anonymous):

1,1,1 is one point

OpenStudy (amistre64):

5,-3,-10 is another

OpenStudy (anonymous):

5,-3,-10 is another

OpenStudy (anonymous):

A medal.

OpenStudy (amistre64):

as long as there are at least 2 negatives; and no zeros; your good

OpenStudy (anonymous):

As long as there are at least 2 negatives; and no zeros; your good

OpenStudy (anonymous):

ok, and xyz >0, and not one point but region.

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

A medal

OpenStudy (amistre64):

the region eh... how should we define it?

OpenStudy (anonymous):

i mean xyz < 0

OpenStudy (anonymous):

the region eh... how should we define it?

OpenStudy (anonymous):

to the right of xy plane, to the left of xz plane

OpenStudy (anonymous):

Looks like the whole of the first and third quadrants, except for the point (0,0,0)

OpenStudy (amistre64):

it aint quadrants; its octants in R^3

myininaya (myininaya):

case 1: x,y>0 and z<0 case 2: x,z>0 and y<0 case 3: y,z>0 and x<0

OpenStudy (anonymous):

why the whole octants and not half?

OpenStudy (anonymous):

I think he means half, deending on how he sees octants

OpenStudy (amistre64):

case4: x,y,z <0

myininaya (myininaya):

lol ok showoff!

OpenStudy (amistre64):

lol

myininaya (myininaya):

that should be all the cases now

OpenStudy (anonymous):

The answer is, to the right of the xz plane and behind the yz plane or to the left of the xz plane and in front of the yz plane. I don't understand. Can you help me?

OpenStudy (amistre64):

that only makes sense if you position the axis as whaat, left handed?

OpenStudy (anonymous):

z points up and x to the left

OpenStudy (amistre64):

thats right handed orientation then :)

OpenStudy (amistre64):

the x,y 'plane' excludes z ; and the rest in similar fashions

OpenStudy (anonymous):

should I say infront of the xz plane when I mean the xz plane facing towards positive x?

OpenStudy (anonymous):

excuse me, facing towards positive y

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