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
weqwewe [10]
3 years ago
5

Differential Equations Problem

Mathematics
1 answer:
fgiga [73]3 years ago
7 0

Answer:

y=\frac{t^2e^{2t}}{3}+ce^{2t}

Step-by-step explanation:

We have given differential equation \frac{dy}{dt}-2y=t^2e^{2t}

We know that linear differential equation is given by \frac{dy}{dt}+Py=Q

On comparing with standard equation P = -2 and Q= t^2e^{2t}

Now integrating factor IF=e^{-Pdt}

IF=e^{-2dt}=e^{-2t}

Now solution of differential equation is given by

y\times IF=\int\ IF\times Q\ dt

y\times e^{-2t}=\int\ e^{-2t}\times t^2e^{2t}\ dt

y\times e^{-2t}=\frac{t^2}{3}+c

y=\frac{t^2e^{2t}}{3}+ce^{2t}

You might be interested in
a new computer costs $450. What is the final price of the computer if it is in sale for 30% off and you must pay the 7% sales ta
zzz [600]

Answer:

$337.05

Step-by-step explanation:

450 x (1- 0.3)= $315

$315 x (1+0.07)= $337.05

4 0
3 years ago
Complete the synthetic division problem below.
rewona [7]

Answer:

B

Step-by-step explanation:

- 2 | 2   2   - 2   4

      ↓  - 4    4   - 4

    --------------------------

      2   - 2   2    0 ← remainder

Since the remainder = 0 then (x + 2) is a factor

quotient = 2x² - 2x + 2

4 0
2 years ago
2. A supermarket display consists of boxes of cereal. The bottom row has 23 boxes. Each row has three fewer boxes than the row b
svetlana [45]
Y=23-(3)x should be the formula
7 0
3 years ago
Geraldine has 8 cups of sugar. She uses 6 3/5 cups to make a large cake. How many cups of sugar does she have left?
Inga [223]

Answer:

1\frac{2}{5}

Step-by-step explanation:

remaining cups = total cups - used caps

let remaining cups be = x

     total cups = y = 8

      used cups = z= 6\frac{3}{5}

Hence x = y-z

x = 8 - 6\frac{3}{5}

  = \frac{8}{1}  - \frac{33}{5}  = \frac{40-33}{5} = \frac{7}{5} = 1\frac{2}{5}

x= 1\frac{2}{5}

Remaining cups = 1\frac{2}{5}

4 0
3 years ago
In Exercises 23–36, solve the system using either Gaussian elimina- tion with back-substitution or Gauss-Jordan elimination. 23.
Luba_88 [7]

Answer:

23) x= 3, y = 4

24) Any (x,y) values where x = 1.5 - 2y

Step-by-step explanation:

For the first system(23), it goes like this

[1 2 | 7]

[2 1 | 8]

We need to do L2 = L2 - 2L1, so now it is

[1 2   | 7]

[0 -3 |-6]

So, now we have:

-3y = -6 *(-1)

3y = 6

y = 2

x + 2y = 7

x + 4 = 7

x = 3

Now for system 24, we have:

[-1 2 | 1.5]

[2 -4| 3]

We do L2 = L2 + 2L1, so we have:

[-1 2 | 1.5]

[0 0| 0]

So there are infinite solutions for this system. The solution for this system will be each (x,y) pair where x = 1.5 - 2y.

5 0
3 years ago
Other questions:
  • I don’t get it plz help
    10·1 answer
  • Write the equation of a line that passes through the point (-2, 1) and has a slope of 4.
    5·1 answer
  • What is the vertex of the function f(x) = x2 + 3x + ?
    6·1 answer
  • A 24,000 gallon pool is being filled at a rate of 40 gallons per minute. At this rate how many minutes will it take to fill this
    6·1 answer
  • What is m∠A?<br><br> 45°<br> 103°<br> 77°<br> 35°
    11·1 answer
  • I need help I don't understand this
    12·2 answers
  • help only one question please with full step amd if you are right i will mark you as brainlist. 30 point​
    13·1 answer
  • Look at the png , pls help!
    6·1 answer
  • I NEED HELP!!! <br><br> Find the area of this figure
    9·1 answer
  • HELP PLEASEEEEE THank you fractions &amp; ratios fill in space:
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!