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3 years ago

15

BRAINLIST‼️‼️WILL GIVE BRAILIDT

1 answer:

lesya692 [45]3 years ago

4 0

Answer:

d

Step-by-step explanation:

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Need some help with indefinite integrals pleasee

goldenfox [79]

Observe that $(x^2+2x+2)'=2x+2$ .

You have that $\int \frac{2x}{x^2+2x+2}\; dx=\int \frac{2x+2-2}{x^2+2x+2}\; dx=\int \frac{2x+2}{x^2+2x+2}\; dx+\int \frac{1}{x^2+2x+2}\; dx=I_1+2I_2$ .

To compute $I_1$ you set $y=x^2+2x+2$ , so $dy=2x+2\; dx$ . Therefore, $I_1=\int \frac{1}{y}\; dy=\ln |y|=\ln |x^2+2x+2|=\ln (x^2+2x+2)$ .

For $I_2$ observe that $x^2+2x+2=(x+1)^2+1$ . Let $y=x+1$ . Then $dy=dx$ and $I_2=\int \frac{1}{y^2+1}=\arctan y=\arctan (x+1)$ .

So, $\int \frac{2x}{x^2+2x+2}=\ln (x^2+2x+2)+2\arctan (x+1)+c$ .

8 0

3 years ago

One light year is 5.8697136 x 10^12 miles. How for is 8.333 light minutes?

kirill115 [55]

Work out length of one second by dividing by 525600, then multiply that answer by 8.333. Answer should be 93026473.1507 miles

5 0

3 years ago

Im to dum for this, can big brain person do this PLZ

Alla [95]

Answer:

its ur ma and also wheres the picture nobrainer;-;

Step-by-step explanation:

5 0

3 years ago

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Divide 54 books between A and B in the ratio 13:14

Ludmilka [50]

Answer:

hi

Step-by-step explanation:

i think,

13:14=54

13k+14k=54

27k=54

k=54/27

k=2

13×2=26 and 14×2=28

to verify the correctness of the answer-26+28=56

have a nice day

hope it helps

3 0

3 years ago

The Statue of Liberty is 305.5 feet tall ,how tall is one-hundredth as tall as the Statue

Rudiy27

Take 305.5 and divide it by 100 and you'll get your answer

6 0

3 years ago

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