Use integration by parts to evaluate the indefinite integral
[ 2x sin(c) dx

Answers

Answer 1

Answer:

-2x cos x + 2 sin x + C

Step-by-step explanation:

∫ (2x sin x) dx

If u = 2x, then du = 2 dx.

If dv = sin dx, then v = -cos x.

∫ u dv = uv − ∫ v du

= 2x (-cos x) − ∫ (-cos x) (2 dx)

= -2x cos x + 2 ∫ cos x dx

= -2x cos x + 2 sin x + C

Answer 2

Answer:

[tex]\displaystyle \large{2 \sin x - 2x \cos x + C}[/tex]

Step-by-step explanation:

We are given the indefinite integral:

[tex]\displaystyle \large{\int {2x \sin x} \ dx }[/tex]

Using by-part method, we have to substitute u-term and dv appropriately.

By-part is an integration of product rules, when integrated the product rules of differentiation, we’ll obtain:

[tex]\displaystyle \large{\int {u} \ dv = uv - \int {v} \ du}[/tex]

Above is by-part method/formula.

Where 4 terms are presented:

ududvv

Our main terms to substitute are u and dv which mean u-term has to be a function that’s differentiatable and dv has to be a function that’s integratable.

The main concept of by-part is to understand how to substitute appropriately which you can simply follow below:

LIATE

Stands for Logarithm, Inverse (Trigonometry), Algebraic, Trigonometric and Exponential.

These are in orders from first to last on what to let u-term first. That means logarithm functions must be the first to substitute themselves as u-term, so if you encounter a logarithmic function and a polynomial function, you must let u = logarithmic function while dv = polynomial.

In this case, we have 2x which is polynomial and sin(x) which is trigonometric. According to LIATE, we have to let Algebraic or Polynomial 2x be first to substitute as u-term, that means our dv is trigonometric sin(x).

Therefore, we have:

u = 2xdu = 2dx dv = sin(x)dxv = -cos(x)

Now, substitute these terms in accordingly to formula of by-part.

[tex]\displaystyle \large{\int {2x \sin x} \ dx = 2x \cdot (-\cos x) - \int {-\cos x \cdot 2 \ dx}}\\ \displaystyle \large{\int {2x \sin x} \ dx = -2x \cos x + \int {2 \cos x \ dx}}\\ \displaystyle \large{\int {2x \sin x} \ dx = -2x \cos x + 2 \int {\cos x \ dx}}\\ \displaystyle \large{\int {2x \sin x} \ dx = -2x \cos x + 2 \cdot \sin x + C}\\ \displaystyle \large{\int {2x \sin x} \ dx = -2x \cos x + 2 \sin x + C}[/tex]

__________________________________________________

Summary

  Property

[tex]\displaystyle \large{ \int {k f(x)} \ dx = k \int{f(x)} \ dx \ \ \ \ \tt{(k \ \ \ is \ \ \ a \ \ \ constant.)}\\[/tex]

Only shown in explanation.

  By-Part

[tex]\displaystyle \large{\int u \ dv = uv- \int v \ du}[/tex]

  LIATE

The functions in order that should be u-term from first to last.

Logarithm Inverse Trigonometric

These functions above do not have integration formula by default.

Polynomial (Algebraic)TrigonometricExponential (Last since it’s the easiest to integrate, especially natural exponential)

  Indefinite Integral

Make sure to always add + C after evaluating the integral, regardless what multiplies or attempts to affect + C, we must always add + C.

__________________________________________________


Related Questions

An organism measures 2.9• 10-5 centimeters in diameter. What number in standard notation [ANSWERS PLEASE I’ll even cash app u 2$]

Answers

2.9 x 10 = 29
29-5 = 24

5. Susie has 24 bags of pretzels and 16 bags of chips. She wants to make snack
packs to sell at the carnival, and she wants each snack bag to have the same
number of pretzel bags and chip bags. ANSWER questions 5a, b and c

Answers

Step-by-step explanation:

Given that,

Susie has 24 bags of pretzels and 16 bags of chips.

She wants to make snack  packs to sell at the carnival, and she wants each snack bag to have the same  number of pretzel bags and chip bags.

To find the same no of pretzel bags and chip bags, we can take LCM of 24 and 16.

LCM of 24 and 16 = 48

It means she will need 48 pretzel bags and chip bags

Which ratio is greater than 5/8 ? A. 12/24 B. 3/4 C. 15/24 D. 4/12

Answers

B is the 3/4 = .75 and 5/8 = .625

Jerome has $28 in his pocket. He wants to buy as many candy bars as he can for $1.75 cach. Write an equation to show how many candy bars he can buy?

Answers

Answer:

16

Step-by-step explanation:

Take the total amount and divide by the amount per candy bar

28 /1.75

16

He can buy 16 candy bars

Solve the problem.
A pendulum swinging through a central angle of 108° completes an arc of length 24 cm. What is the length of the
pendulum? Round to the nearest hundredth.

Answers

Answer:

Yes! I was looking to refresh my geometry skill!

Step-by-step explanation:

So, a 108* arc is 24 cm. How to solve it?

First, we need to find the Circumference, or perimeter of the circle. (That the swinging pendulum makes.

Second, use that in the formula for circumference, and find the radius.

Third, done! So, let's get to it!

All we have to do to find the circumference is divide 24 by 108, then multiply that by 360*(because a circle is 360*).

[tex]24/108*360=80[/tex]

So, our circumference is 80cm. Nice! Just need to input that into the circumference formula.

[tex]80=2\pi *r\\[/tex]

Now, to solve...

[tex]40=\pi *r\\40/\pi =r[/tex]

This rounds to about 12.73 cm.

Hope this helps!

Happy Geometry!

please help, will give brainiest

Answers

300 accidents were investigated

which fraction equals a repeating decimal 3/10 1/3 6/12 3/4

Answers

First turn them all into decimals.

Divide the numerator (top) by the denominator (bottom).

3/10 is .3 and doesn’t repeat.

1/3 is .333333.....

6/12 is .5, doesn’t repeat.

3/4 is .75, also doesn’t repeat.

1/3 is the repeating decimal.

Find the value of using identities 996^2

Answers

Answer:

992,016

Step-by-step explanation:

[tex] {996}^{2} \\ = {(1000 - 4)}^{2} \\ = {1000}^{2} - 2 \times 1000 \times 4 + {4}^{2} \\ = 1000000 - 8000 + 16 \\ = 1000016 - 8000 \\ = 992,016 \\ [/tex]

Solve -2a -5 > 3 Which graph shows the solutions?

Answers

Answer: a< -4 D

Step-by-step explanation:

Use the tables above to compose the following functions.
A: f(g(2))
B: f(g(5))
C: g(f(-1))
D: g(f(5))

Answers

Answer:

A. 1

B. 2

C. 2

D. 0

Hope it helps :-)

Samantha is buying a bike for $290. If sales tax is 6.4%, how much will be added to the price of the bike?

Answers

Answer:

18.56

Step-by-step explanation:

6.4% of 290 is 18.56

you find this by multiplying 290 by 0.064 (which is the decimal form of 6.4%)

The sum of two numbers is 50. The first number is 18 less than the 2nd number. What are the
2 numbers?

Answers

Answer:

2y + 2 + y = 50 (combine like terms)

3y + 2 = 50

3y = 50 - 2

3y = 48

y = 16

Substitute 16 for y in either equation 1 or 2 and solve for x (I chose equation 1):

x + 16 = 50

x = 50 - 16

x = 34

Step-by-step explanation:

99 is 36% of what number?

Answers

Answer:

257

Step-by-step explanation:

36% of 275 is 99. 100% of 275 is 275, therefore 36 percent of 275 equals 99

6th grade math pls help​

Answers

If you’re still confused just tell me and I’ll explain it again

If SE = 7 and EG = 20 , then SG =

Answers

try 13 and if it’s wrong im sorry

Which interval for the graphed function has a local
minimum of 0?

[-3, -2]
[-2, 0]
[1, 2]
[2, 4]

Answers

Answer:

the answer is D i hope this help

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

A steel woodworking blade is created from a rectangular mold with vertices at (0, 0), (0, 1), (4, 0), and (4, 1). (All coordinates are in centimeters). At each point of the blade, the thickness, in milimeters, is equal to twice the y-coordinate. Find the height of the balance point of the blade.

Answers

Answer:

5.6 cm

Step-by-step explanation:

Given that a steel woodworking blade is created from a rectangular mold with vertices at (0, 0), (0, 1), (4, 0), and (4, 1). (All coordinates are in centimeters). At each point of the blade, the thickness, in milimeters, is equal to twice the y-coordinate. 

The x axis or the horizontal length will be L = (1 - 0)^2 + ( 0 - 0 )^2

L = 1 cm

The y axis or the vertical length will be

L = sqrt ( [ 4-0]^2 + [0-0]^2)

L = Sqrt(16)

L = 4 cm

Given that at each point of the blade, the thickness, in milimeters, is equal to twice the y-coordinate.

That is,

Thickness = 2 × 4 = 8 mm

The height of the balance point of the blade will be;

Height = 8 mm + 4 cm + 8 mm

Height = 0.8 + 4 + 0.8

Height = 5.6 cm

Note that the thickness will be added to both the top and the bottom of the blade.

HELP!! Need Help With My Homework!

Answers

Answer:

x + 4 = 9 + 2x - 15

Step-by-step explanation:

Since, E is between F and G.

Therefore,

FG = EF + EG

x + 4 = 9 + 2x - 15

x + 4 = 2x - 6

4 + 6 = 2x - x

10 = x

or

x = 10

Rhonda had $300 to buy supplies for the animal shelter. She bought 8 bags of dog food and 11 leashes. Each bag of food cost $25.19, and each leash cost $4.65. How much money did Rhonda have left after her purchases? $11.65 $14.29 $22.91 $47.33

Answers

Hey there! I'm happy to help!

We have 8 bags of dog food and each costs $25.19

8(25.19)=201.52

And we have 11 leashes each costing $4.65.

11(4.65)=51.15

We add these totals up.

201.52+51.15=252.67

We subtract this from 300 to see how much is left.

300-252.67=47.33

Rhonda had $47.33 left after her purchases.

Have a wonderful day! :D

Answer:

$47.33

Step-by-step explanation:

she bought 8 bags of dog food so: 8 x 25.19 = 201.52

she bought 11 leashes so: 4.65 x 11 = 51.15

201.52 + 51.15 = 252.67

300 - 252.67 = 47.33

Find the slope, if it exists, of the line containing
(-8,-5) and (-19,- 13)

Answers

Answer: 8/11

Step-by-step explanation:

To find slope you can use this formula:

y2-y1/x2-x1

substitute the values with the ones from the 2 points

-13-(-5)= -8

-19-(-8)=-11

you then divide -8/-11

and you get 8/11

8/11 is the slope of those 2 points.

Meg skateboards One-fourth of a mile in One-half of an hour. At this rate, how far will she skateboard in an hour?

Answers

Answer: i'm pretty sure Meg would have skated 1/2 of a mile in an hour

Answer:

meg would have skated 1/2 of a mile in 1 hour.

Step-by-step explanation:

Elaina wrote two correct variable expressions to represent the phrase “one-fourth of a number.”

Which variable expressions could Elaina have written?

Select each correct answer.

Answers

Answer:

C and D are both correct

hope that helps

here are the answer choices if anyone needs it :)

4 ÷ n

14n

n4

4n

A car's rear windshield wiper rotates 140°. The total length of the wiper mechanism is 24 inches and the length of the wiper blade is 16 inches. Find the area wiped by the wiper blade. (Round your answer to one decimal place.)

Answers

Answer:

312.7 in^2

Step-by-step explanation:

This problem is on the mensuration of flat shapes, sectors and arc.

we know that the area of a sector is given as

A=(∅/360)*πr^2

Given that the length of the wiper R=24 in

and the length of the blade r= 16in

To find the area of the wiped surface we only require the length of the blade as the radius

The area of the wiped surface is given as= (140/360)*3.142*16^2

A= 0.3888*3.142*256

A=312.7 in^2

this is a segment addition practice. can someone please help me find the length indicated?

Answers

Answer:

3

Step-by-step explanation:

Points C, D, and E are collinear.

Segment CD = 8

Segment CE = 11

Segment DE = ?

According to the segment addition postulate:

[tex] CD + DE = CE [/tex]

[tex] 8 + DE = 11 [/tex] (substitution)

Subtract 8 from both sides

[tex] 8 + DE - 8 = 11 - 8 [/tex]

[tex] DE = 3 [/tex]

The missing lenght indicated = 3

The temperature in Chicago was 12°F this
morning, while the temperature in Minneapolis
was -8°F. What is the difference between the
two temperatures?

Answers

Answer:

4 °F

Step-by-step explanation:

Which situation can be represented by the inequality 3.35x + 25 < 6.75x + 5?

Answers

Answer:

x >100/17

plz mark brainliest

how to factorise 30+b-b²​

Answers

Hey there!☺

[tex]Answer:\boxed{-(b-6)(b+5)}[/tex]

[tex]Explanation:[/tex]

[tex]30+b-b^2[/tex]

Factor 30+b-b^2 by grouping.

[tex]-(b-6)(b+5)[/tex]

Hope this helps!☺

The area of a rectangular mirror is 11 11 16 square feet. The width of the mirror is 2 3 4 feet. If there is a 5 foot tall space on the wall to hang the mirror, will it fit

Answers

Yes the mirror will fit

You intend to estimate a population mean μ with the following sample. 78.4, 85.3, 50, 68.4, 59.4, 73.7, 73.2, 47.4, 40.5
You believe the population is normally distributed.
Find the 99.5% confidence interval.
The answer must be done as an open-interval accurate to 2 decimal places.

Answers

Answer:

(17.75, 110.32)

Step-by-step explanation:

The sample mean is 64.03, and the standard deviation is 15.43.

The population is normally distributed, so 99.5% confidence is ±3 standard deviations.

The confidence interval is therefore:

(64.03 − 3 × 15.43, 64.03 + 3 × 15.43)

(17.75, 110.32)

The 99.5% confidence interval will be equal to  (17.75, 110.32).

What is Probability?

Probability is calculated as the proportion of favorable events to all potential scenarios of an event. The proportion of positive results, or x, for an experiment with 'n' outcomes can be expressed.

As per the given data provided by the question,

With a standard deviation of 15.43 and a sample mean of 64.03, respectively.

Since the population has normally distributed, 99.5% probability lies within a range of three standard deviations.

Consequently, the confidence interval is:

= (64.03 − 3 × 15.43, 64.03 + 3 × 15.43)

= (17.75, 110.32), this is up to 2 decimal places.

To know  more about Probability:

https://brainly.com/question/11234923

#SPJ3

Evaluate 4-0.25g+0.5h when g=10 and h=5​

Answers

Multiply -0.25(10) and 0.5(5)
Add -0.25 and 0.25
4-0=4
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