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4 years ago

What multiplies to get -9 and adds to get 0

Mathematics

2 answers:

lilavasa [31]4 years ago

5 0

3 and -3
3 x -3 = -9
3-3 = 0

Annette [7]4 years ago

4 0

3 and -3 multiply for -9 and add for 0

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EXAMPLE 5 Find the maximum value of the function f(x, y, z) = x + 2y + 9z on the curve of intersection of the plane x − y + z =

geniusboy [140]

The Lagrangian,

$L(x,y,z,\lambda,\mu)=x+2y+9z-\lambda(x-y+z-1)-\mu(x^2+y^2-1)$

has critical points where its partial derivatives vanish:

$L_x=1-\lambda-2\mu x=0$

$L_y=2+\lambda-2\mu y=0$

$L_z=9-\lambda=0$

$L_\lambda=x-y+z-1=0$

$L_\mu=x^2+y^2-1=0$

$L_z=0$ tells us $\lambda=9$ , so that

$L_x=0\implies-8-2\mu x=0\implies x=-\dfrac4\mu$

$L_y=0\implies11-2\mu y=0\implies y=\dfrac{11}{2\mu}$

Then with $L_\mu=0$ , we get

$x^2+y^2=\dfrac{16}{\mu^2}+\dfrac{121}{4\mu^2}=1\implies\mu=\pm\dfrac{\sqrt{185}}2$

and $L_\lambda=0$ tells us

$x-y+z=-\dfrac4\mu-\dfrac{11}{2\mu}+z=1\implies z=1+\dfrac{19}{2\mu}$

Then there are two critical points, $\left(\pm\frac8{\sqrt{185}},\mp\frac{11}{\sqrt{185}},1\pm\frac{19}{\sqrt{185}}\right)$ . The critical point with the negative $x$ -coordinates gives the maximum value, $9+\sqrt{185}$ .

8 0

4 years ago

An equation that is true for certain values of the variables in it is called an identity TRUE OR FALSE

klemol [59]

Answer:

False

Step-by-step explanation:

The answer is true or false

5 0

4 years ago

What is the area of a rectangle with the numbers as 6 and 14

strojnjashka [21]

Answer:

I believe its 84

Step-by-step explanation:

6 multiplied by 14

7 0

4 years ago

Which frame processing method causes a switch to wait until the first 64 bytes of the frame have been received before forwarding

malfutka [58]

Fragment free frame processing method causes a switch to wait until the first 64 bytes of the frame have been received before forwarding the frame to the destination device

Fragment free processing

An advanced type of cut-through switching is fragment-free (runtless switching). Before making a switching choice, switches engaged in cut-through switching merely read the Ethernet frame's destination MAC address field.

What distinguishes fragment-free switching from fast forward switching?

The latency in fast-forward mode is calculated between the first bit received and the first bit delivered. The most common cut-through switching technique is fast-forward switching. Switching without fragments: The switch stores the first 64 bytes of the frame in fragment-free switching before forwarding.

Learn more about frame here: brainly.com/question/19756844

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3 0

2 years ago

Please help me with this question

monitta

5(1)-3=2

5(2)-3=7

5(3)-3=12

5(4)-3=17

4 0

2 years ago