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
Ne4ueva [31]
3 years ago
11

5xy+10x^2-y-2x ASAP PLEASS

Mathematics
1 answer:
spayn [35]3 years ago
7 0

Answer:

241

Step-by-step explanation:

You might be interested in
Solve y ' ' + 4 y = 0 , y ( 0 ) = 2 , y ' ( 0 ) = 2 The resulting oscillation will have Amplitude: Period: If your solution is A
Vlad [161]

Answer:

y(x)=sin(2x)+2cos(2x)

Step-by-step explanation:

y''+4y=0

This is a homogeneous linear equation. So, assume a solution will be proportional to:

e^{\lambda x} \\\\for\hspace{3}some\hspace{3}constant\hspace{3}\lambda

Now, substitute y(x)=e^{\lambda x} into the differential equation:

\frac{d^2}{dx^2} (e^{\lambda x} ) +4e^{\lambda x} =0

Using the characteristic equation:

\lambda ^2 e^{\lambda x} + 4e^{\lambda x} =0

Factor out e^{\lambda x}

e^{\lambda x}(\lambda ^2 +4) =0

Where:

e^{\lambda x} \neq 0\\\\for\hspace{3}any\hspace{3}\lambda

Therefore the zeros must come from the polynomial:

\lambda^2+4 =0

Solving for \lambda:

\lambda =\pm2i

These roots give the next solutions:

y_1(x)=c_1 e^{2ix} \\\\and\\\\y_2(x)=c_2 e^{-2ix}

Where c_1 and c_2 are arbitrary constants. Now, the general solution is the sum of the previous solutions:

y(x)=c_1 e^{2ix} +c_2 e^{-2ix}

Using Euler's identity:

e^{\alpha +i\beta} =e^{\alpha} cos(\beta)+ie^{\alpha} sin(\beta)

y(x)=c_1 (cos(2x)+isin(2x))+c_2(cos(2x)-isin(2x))\\\\Regroup\\\\y(x)=(c_1+c_2)cos(2x) +i(c_1-c_2)sin(2x)\\

Redefine:

i(c_1-c_2)=c_1\\\\c_1+c_2=c_2

Since these are arbitrary constants

y(x)=c_1sin(2x)+c_2cos(2x)

Now, let's find its derivative in order to find c_1 and c_2

y'(x)=2c_1 cos(2x)-2c_2sin(2x)

Evaluating    y(0)=2 :

y(0)=2=c_1sin(0)+c_2cos(0)\\\\2=c_2

Evaluating     y'(0)=2 :

y'(0)=2=2c_1cos(0)-2c_2sin(0)\\\\2=2c_1\\\\c_1=1

Finally, the solution is given by:

y(x)=sin(2x)+2cos(2x)

5 0
3 years ago
- a(-4-5a) - 3a(2 + a) =
Lorico [155]

Answer:

Let's simplify step-by-step.

(−a)(−4 − 5a) − 3a(2 + a)

Distribute:

= (−a)(−4) + (−a)(−5a) + −3a^2 + −6a

= 4a + 5a^2 + −3a^2 + −6a

Combine Like Terms:

= 4a+5a^2 + −3a^2+ −6a

= (5a2+ −3a^2) + (4a + −6a)

= 2a2 + −2a

Final Answer:

= 2a^2−2a!

4 0
3 years ago
Read 2 more answers
What is the measure of
bija089 [108]

Answer:

31

Step-by-step explanation:

180-149 = 31

hope this helps

4 0
3 years ago
Read 2 more answers
In 2008, golfer Annika Sornestam had a driving accuracy of 71%. That is, on par 4 and par 5 holes, her tee shot landed in the fa
Nady [450]

Answer:

Ok, we know that the driving accuracy is of 71%.

Then the first step is to get a spinner that is enumerated from 1 to 100 (in such way that each number is equispaced)

Now, we can mark a section between numbers 1 and 71. (this regio represents the cases where the shot lands in the fairway) and the unmarked region represents the cases where the shot does not land in the fairway.

Now, for each shot, we can spin our spinner next to a fixed pencil, depending on the section of the spinner that is marked by the pencil when the spinner fully stops, we can guess if the shot landed or not in the fairway.

In this way the shot has the region from 1 to 71 (71%) to land in the fairway

and the region from 72 to 100 to not land in the fairway.

If you want to simulate Sorenstam’s performance in a round of golf where she attempts 15 drives, you need to spin the spinner 15 times, and record the oucomes.

8 0
3 years ago
50 pts-----Is there a special way to solve a question like this (without calculator)
andreyandreev [35.5K]
The only way to do it is 1.8x1.8x1.8x1.8x1.8x1.8x1.8x1.8x1.8. Or just use a calculator. Sorry to let you down
4 0
3 years ago
Other questions:
  • DVDs are on sale for $29 each. Felipe writes the expression 2 x 29 to find the cost in dollars of buying 2
    15·1 answer
  • What is the approximate circumference of a circle with a radius of 8.5 meters? Use π ≈ 3.14.
    10·1 answer
  • If $860 is invested for one year at 11% simple interest how much interest is earned
    10·1 answer
  • Melissa has 350 in her savings account. she decides that she will put the same amount of money each month into her account.Her g
    13·1 answer
  • How many pounds is a 1,000 millimeters
    12·1 answer
  • How to do this question??
    13·1 answer
  • Abox of twelve granola bars was $3.60. What was the unit cost per bar?
    14·2 answers
  • Find the original price.<br> A bracelet costs $36 after a 25% discount.
    11·2 answers
  • Marcos instaló un antivirus en su teléfono que se actualiza cada 4 días, otro en su Tablet que se actualiza cada 6 días y otro e
    15·1 answer
  • Which graph represents the solution of y &lt;_ x + 3 and y &gt;_ -2x - 2? Please show work
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!