1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nataliya [291]
3 years ago
7

If -xy – 5+ y^2+ x^2= 0 and it is known that dy/dx= y-2x/-x+2y, find all

Mathematics
1 answer:
sleet_krkn [62]3 years ago
3 0

Answer:

There is no point of the form (-1, y) on the curve where the tangent is horizontal

Step-by-step explanation:

Notice that when x = - 1. then dy/dx becomes:

dy/dx= (y+2) / (2y+1)

therefore, to request that the tangent is horizontal we ask for the y values that make dy/dx equal to ZERO:

0 = ( y + 2) / (2 y + 1)

And we obtain y = -2 as the answer.

But if we try the point (-1, -2) in the original equation, we find that it DOESN'T belong to the curve because it doesn't satisfy the equation as shown below:

(-1)^2 + (-2)^2 - (-1)*(-2) - 5 = 1 + 4 + 2 - 5 = 2  (instead of zero)

Then, we conclude that there is no horizontal tangent to the curve for x = -1.

You might be interested in
How do you simplify <br> -5(a-6) + 2a
Vilka [71]
Easy, take your problem,

-5(a-6)+2a

Multiply the 5.

-5a+30+2a

Then just add apples and oranges.

-5a+2a= -3a.

Making your equation -3a+30.
4 0
3 years ago
Read 2 more answers
What is 3 divided by 1.02
Mamont248 [21]
2.9411764706
but if they're telling you to round, then round (:
6 0
3 years ago
Read 2 more answers
Which statistic is used to determine if there is a significant difference between three or more sets of related scores
crimeas [40]

The t-test is a type of inference statistic used to determine if there is a significant difference between the means of two groups that may be related to a particular characteristic. The t-test is one of many tests used to test statistical hypotheses.

Inference statistics have two main purposes. Estimates for population groups (for example, the average SAT score for all 11th graders in the United States). Hypothesis testing to draw inferences about the population

One-way ANOVA is a common method for comparing three or more group means. The usual goal is to determine if the mean (or median) of at least one group is different from the other. Subsequent multiple comparison tests are often used to determine where differences occur.

Learn more about   t-test  here: brainly.com/question/6589776

#SPJ4

7 0
2 years ago
Is Quotient a multiplication word or division word
Alex_Xolod [135]
It’s a division word
7 0
3 years ago
Read 2 more answers
Hey I Need Help With This. What Is the answer?<br>​
scoundrel [369]

Answer:

22%

Step-by-step explanation:

out of 100, 22 boxes are shaded

3 0
3 years ago
Other questions:
  • What is the distance between points A and B?
    14·2 answers
  • Alyssa spent 9.20 for 16 packs of gum at this rate how much would it cost alyssa to buy 30 packs of gum.
    6·2 answers
  • there are 78 tourists going on a sightseeing trip.the tour company's buses hold 12 people each how many buses will they need?
    7·2 answers
  • Use the formula SA=6s2 , where SA is the surface area and s is the edge length of the cube, to solve this problem. Gavan must pa
    10·1 answer
  • Polygon ABCD will be dilated by a scale factor of 2.2 with the origin as the center of dilation, resulting in the image A′B′C′D′
    14·1 answer
  • Which of the following is a one-to-one function?
    15·1 answer
  • What is a-5/6= -3 2/3 + 5/6
    14·1 answer
  • Write an expression to represent: Four minus the product of one and a number x.
    7·2 answers
  • helppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp
    5·1 answer
  • Stephen's lunch bill is currently at $8.33. Stephen orders a fruit salad for take-out, and wants to leave $2.25 as a tip for his
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!