3 years ago

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

$\displaystyle\int\arctan x\,\mathrm dx=x\arctan x-\frac12\ln(1+x^2)+C$

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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

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3 years ago

Does anyone know what 1+1 is?

hammer [34]

1+1 = 2 that is the answer

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3 years ago

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Solve the inequality for x. Show each step of the solution.<br> 12X>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.

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4 years ago

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Man help plzzz ive been struggling

SpyIntel [72]

Answer:

Step-by-step explanation:

add all together

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