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2 years ago

HELPPPPP MEEE PLEASE

Mathematics

1 answer:

Brut [27]2 years ago

4 0

The answer is C I think

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Find the trigonometric integral. (Use C for the constant of integration.)

Olin [163]

Suppose we let $u=\sin\theta+\cos\theta$ , so that $\mathrm du=(\cos\theta-\sin\theta)\,\mathrm d\theta$ .

Also, recall the double angle identity for cosine:

$\cos(2\theta)=\cos^2\theta-\sin^2\theta=(\cos\theta-\sin\theta)(\cos\theta+\sin\theta)$

So, we can rewrite and compute the integral using the substitution, as

$\displaystyle\int\cos(2\theta)(\sin\theta+\cos\theta)^3\,\mathrm d\theta$

$=\displaystyle\int u\cdot u^3\,\mathrm du$

$=\displaystyle\int u^4\,\mathrm du$

$=\dfrac{u^5}5+C$

$=\boxed{\dfrac{(\cos\theta+\sin\theta)^5}5+C}$

4 0

3 years ago

PLEASEPLEASEPLEASE HELP!!!!!!!!!!! Don't mind to much of the notes, I think y=23, but what is x??

kirza4 [7]

REVISED

Answer:

x = 15.33

Step-by-step explanation:

3y is equal to 2x + 13. The reason why is because they are corresponding angles, (right next to each other). From there, you would have to substitute y into 3y. The equation should look like: 3(23) = 2x + 13. All that is left is to solve for x.

5 0

2 years ago

Nigel is making holiday cookies. His recipe calls for 1/2 pound of raisins. The recipe also calls for 1/4 pound of dates and 1/8

KiRa [710]

Answer:

D. 7/8 pound

Step-by-step explanation:

1/2+1/4+1/8=7/8

7/8 pound of dried fruit will be put into the cookies in all.

5 0

2 years ago

Can someone help me with this it is for mathh.

lapo4ka [179]

Answer: it would be P=4n

8 0

2 years ago

I really need help!!!!!!!!!!!!

Debora [2.8K]

I am not 100% positive but from what I remember learning I think the answer you are looking for on the first question is C.

6 0

2 years ago

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