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2 years ago

I need some help . I don't understand

Mathematics

2 answers:

CaHeK987 [17]2 years ago

8 0

The answer is d. angles 8 and 16

REY [17]2 years ago

3 0

I think it is D. because they are both on the bottom and they are at the same spot

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Why is the answer to this integral's denominator have 1+pi^2

ss7ja [257]

It comes from integrating by parts twice. Let

$I = \displaystyle \int e^n \sin(\pi n) \, dn$

Recall the IBP formula,

$\displaystyle \int u \, dv = uv - \int v \, du$

Let

$u = \sin(\pi n) \implies du = \pi \cos(\pi n) \, dn$

$dv = e^n \, dn \implies v = e^n$

Then

$\displaystyle I = e^n \sin(\pi n) - \pi \int e^n \cos(\pi n) \, dn$

Apply IBP once more, with

$u = \cos(\pi n) \implies du = -\pi \sin(\pi n) \, dn$

$dv = e^n \, dn \implies v = e^n$

Notice that the ∫ v du term contains the original integral, so that

$\displaystyle I = e^n \sin(\pi n) - \pi \left(e^n \cos(\pi n) + \pi \int e^n \sin(\pi n) \, dn\right)$

$\displaystyle I = \left(\sin(\pi n) - \pi \cos(\pi n)\right) e^n - \pi^2 I$

$\displaystyle (1 + \pi^2) I = \left(\sin(\pi n) - \pi \cos(\pi n)\right) e^n$

$\implies \displaystyle I = \frac{\left(\sin(\pi n) - \pi \cos(\pi n)\right) e^n}{1+\pi^2} + C$

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1 year ago

The time that a butterfly lives after emerging from its chrysalis can be modelled by a random variable T, the model here taking

olasank [31]

Xd answer is d I hope u find the answer

8 0

3 years ago

Oxana [17]

Answer: The measurement of angle B is 34. The measurement of angle C is 108. The measurement of angle F is 72.

Step-by-step explanation:

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2 years ago

Which expression is equivalent to t+4+3-2

FrozenT [24]

Answer:

t+5

Step-by-step explanation:

We can combine like terms, and get t+(4+3-2) to get t+5.

Hope this helped!

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2 years ago

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What is the highest mulitipul of 2&3

yKpoI14uk [10]

Hope it's 30. .....................

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2 years ago