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
tatiyna
3 years ago
8

Integrate xcos(5x)

Mathematics
2 answers:
AURORKA [14]3 years ago
6 0
I think that you have wrong u-substitution ( partial integration ):\int {u} \, dv= uv- \int {v} \, du
u=x,           dv=cos 5x dx
du=dx,       v=1/5 * sin 5x
Integral becomes:= \frac{xsin 5x}{5}- \int { \frac{1}{5} sin 5x} \, dx= \\ = \frac{xsin5x}{5}- \frac{1}{5}    (- \frac{1}{5}cos5x)= \frac{x sin5x}{5}+ \frac{cos5x}{25} +C
Is it OK now? 
pentagon [3]3 years ago
5 0
Hello,

\int{x*cos(5x)} \, dx=x*\frac{sin(5x)}{5}- \frac{1}{5}*\int{sin 5x} \, dx\\=\frac{x*sin(5x)}{5}+\frac{cos(5x)}{25}+c


You might be interested in
Can you guys help? (And explain or show your work if you can)​
dedylja [7]

Answer:

f(x)=4×-2,g(x)=2(x)+8

h(x)=f(x)+g(x)

solution:

h(x)=f(x)+g(x)

=4x-2+2x+8

4x+2x=8+2

6x=10

6x/6=10/6

x=5/3

7 0
3 years ago
Theodore earned ​$ in interest after 4 years on a principal of ​$440. His simple interest rate is​ 4.2%. Bella earned ​$216 in i
vlada-n [284]

Answer:

Theodore's

the interest rate in Theodore's bank is higher

Step-by-step explanation:

A rational investor would want to invest in a bank that offers a higher interest rate because more money is usually preferred to less money.

If the same amount, 1500 was deposited in both banks,

interest in Theodore's bank after 4 years = 1500 x 0.042 x 4 = $252

$252 would be preferred to the $216 earned at Bella's bank

7 0
3 years ago
Find the area of the figure fast​
pogonyaev
Answer is m^2 because the triangles are 108/2 but there is two so it’ll be 108/2 + 108/2 = 108. Then add that to the rectangle of 5 times 14 which is 70 so final answer is 108 plus 70 which is 178 m^2
3 0
3 years ago
Read 2 more answers
Angie and Becky each completed a separate proof to show that the measures of vertical angles AKG and HKB are equal. Who complete
Ann [662]

Answer:

Becky completed the proof incorrectly.

Step-by-step explanation:

The only difference of the two proofs, at least what I can see, is the reason for step 2. Angie claims that it is the Definition of Supplementary Angles, while Becky claims Angle Addition Postulate.

The Definition of Supplementary Angles states that m∠A + m∠B = 180°.

While the Angle Addition Postulate states that m∠A + m∠B = m∠C.

Because the context used is that  m∠AKG + m∠GKB = 180° and m∠GKB + m∠HKB = 180°, it would be using the Definition of Supplementary Angles.

So Becky is the one who is incorrect.

7 0
2 years ago
What is 1/10 of 30,000?
Zanzabum

To solve, multiply

1/10 x 30,000

Note that multiplying 30,000 with 1/10 is the same as dividing 10 from 30,000

30000/10 = 3000

3,000 is your answer

hope this helps

4 0
3 years ago
Other questions:
  • What is the value of g(−3) when g(x)=2x−2 ?
    5·2 answers
  • The perimeter of a rectangular painting is 292 centimeters. If the length of the painting is 83 centimeters, what is its width?
    9·1 answer
  • What is 121.6 in word form
    13·2 answers
  • If the circumference of a circle is below 72 what is the length of AB
    9·1 answer
  • What is the percentage ofb$10.21 comparedto $267.83
    10·1 answer
  • Someone please help me with this
    15·2 answers
  • I am very much lost if anybody understand this can u help me<br> Please
    7·1 answer
  • Using the information from the problem tell: Perimeter or Area of Old (Original) Figure Perimeter or Area of New Figure Make a s
    10·1 answer
  • 1.Write this sentence as an equation.Do not solve it.
    9·1 answer
  • Please I need help 20 points.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!