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Algebra
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10 Nov 2019

<p>((x-5)/4)<sup>2</sup>- ((y-3)/9)<sup>2</sup>=1&#160;&#160;&#160;&#160;&#160; How does one solve this equation?</p>

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Patrina Schowalter
Patrina SchowalterLv2
4 Apr 2019

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<p>"A matrix A is said to be skew symmetric if A^T = - A.Show that if a matrix is skew symmetric, then its diagonal must allbe 0."</p>
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For all the problems, all of the greater thanand less than signs (>,<) should be a greater/less than equalto signs.


-Solve using the simplexmethod:

1) Maximizesubject: p= x + 2y +3z

3x + y+ 3z<1

2x + y + z<2

x> 0, y> 0, z >0


-Solve using the simplexmethod:

2) Minimize subject to: c=10s + 3t,

5s + 4t > 4

2s + 3t > 2

s> 0, t> 0





-Solve:

3)Maximizesubject to P = 3x+ 2y + z


2x + 3y + z <30

x - 2y + z > 20

2x + 5y + 2z >0

x > 0, y > 0, z >0




I know The answer for these question , but the graph missed ,,,So >> The question here is to Graph the answers


Here is the answer


a) |2y+5|>1

so -1 <2y+5< +1

-6<2y<-4


so -3<y<2 answer


b) 7+ |3y-2| <= 10


|3y-2| <= 3


-3<3y-2<3

-1<3y<5


so -1/3 < y < 5/3



c) |6x+5| >= -5


5 > 6x+5 > -5

-10 < 6x < 0

-10/6 < x



d) |3x| < -1


not possible a positive quantity can not be negative


NOW JUST GRAPH .

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