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Vlad1618 [11]
3 years ago
11

Please help... what is the domain of this graph?

Mathematics
1 answer:
k0ka [10]3 years ago
5 0

Answer:-8,4 is ur answer

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Pls im going to fail pls help me
elixir [45]

Answer:

what do you need help with?

4 0
2 years ago
(a)5%)Let fx, y) = x^4 + y^4 - 4xy + 1. and classify each critical point Find all critical points of fx,y) as a local minimum, l
lara31 [8.8K]

f(x,y)=x^4+y^4-4xy+1

has critical points wherever the partial derivatives vanish:

f_x=4x^3-4y=0\implies x^3=y

f_y=4y^3-4x=0\implies y^3=x

Then

x^3=y\implies x^9=x\implies x(x^8-1)=0\implies x=0\text{ or }x=\pm1

  • If x=0, then y=0; critical point at (0, 0)
  • If x=1, then y=1; critical point at (1, 1)
  • If x=-1, then y=-1; critical point at (-1, -1)

f(x,y) has Hessian matrix

H(x,y)=\begin{bmatrix}12x^2&-4\\-4&12y^2\end{bmatrix}

with determinant

\det H(x,y)=144x^2y^2-16

  • At (0, 0), the Hessian determinant is -16, which indicates a saddle point.
  • At (1, 1), the determinant is 128, and f_{xx}(1,1)=12, which indicates a local minimum.
  • At (-1, -1), the determinant is again 128, and f_{xx}(-1,-1)=12, which indicates another local minimum.
4 0
3 years ago
Which of the following best describes the technique used to graph the equation y = 5x + 10using the slope and y-intercept?
nikdorinn [45]
The last one. Mark a point at 10 on the y-axis, go up 5 and right one and mark this point.
7 0
3 years ago
olivia goes to egypt and saw a model of a pyramid. She enlarged it using a scale factor of 1.2. What will be the perimeter and a
DIA [1.3K]
Olivia applied the scale factor to the measurements of the model she saw. We need to know those in order to calculate the new ones.
8 0
3 years ago
Explain<br> how u subtract 247 from 538
VashaNatasha [74]
247- 538 = -291
If you line them up in that order 247 you'll have to borrow. Your answer would be -291
                                                  -538

The only way to not get -291 is to flip the two numbers.
6 0
3 years ago
Read 2 more answers
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