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OverLord2011 [107]
3 years ago
5

ANSWER ALL QUESTIONS

Mathematics
1 answer:
ra1l [238]3 years ago
5 0

Answer:

1) 4 members have both pencil's and eraser's

i dont know others sry frnd

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How do you integrate arctan(x dx? i think that if you simplify the integral you get:?
Temka [501]
Integration by parts will help here. Letting u=\arctan x and \mathrm dv=\mathrm dx, you end up with \mathrm du=\dfrac{\mathrm dx}{1+x^2} and v=x. Now

\displaystyle\int\arctan x\,\mathrm dx=uv-\int v\,\mathrm du
\displaystyle\int\arctan x\,\mathrm dx=x\arctan x-\int\frac x{1+x^2}\,\mathrm dx

For the remaining integral, setting y=1+x^2 gives \dfrac{\mathrm dy}2=x\,\mathrm dx, so

\displaystyle\int\frac x{1+x^2}\,\mathrm dx=\frac12\int\frac{\mathrm dy}y=\frac12\ln|y|+C=\frac12\ln(1+x^2)+C

Putting everything together, you end up with

\displaystyle\int\arctan x\,\mathrm dx=x\arctan x-\frac12\ln(1+x^2)+C
6 0
3 years ago
Jason is three roommates share the cost of the electric bill $108 evenly
I am Lyosha [343]
Its $36 if it is only for his three roommates
and
$27 if it is only for his three roommates w/ Jason
4 0
3 years ago
Does anyone know what 1+1 is?
hammer [34]

1+1 = 2  that is the answer


6 0
3 years ago
Read 2 more answers
Solve the inequality for x. Show each step of the solution.<br> 12X&gt;9(2X-3)-15
agasfer [191]
12x > 18x - 27 - 15
12x > 18x - 42
12x - 18x > -42
-6x > -42
x < -42/-6
two negatives make a positive so now its x < 42/6
Lastly divide 42/6 so it can equal 7

Answer: X < 7.
6 0
4 years ago
Read 2 more answers
Man help plzzz ive been struggling
SpyIntel [72]

Answer:

a

Step-by-step explanation:

add all together

4 0
2 years ago
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