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3 years ago

Prove that cos 2theta - cos 4theta + cos 6theta - cos 12theta = 4 sin 3theta sin 5theta cos 4theta

Mathematics

2 answers:

Vikki [24]3 years ago

8 0

Answer:

i have no idea'

Step-by-step explanation:

Olin [163]3 years ago

8 0

Cos=sin=cos

Mark brainliest please

Hope this helps you

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Simplify <br> 3 2/3 - 2 3/4 =

Rasek [7]

Answer: 11/12

Step-by-step explanation:

1. To solve this problem you can transform the mixed numbers given in the problem to fractions, as you can see below:

3 2/3=(3*3+2)/3=11/3

2 3/4=(4*2+3)/4=11/4

2. Now you must make the substraction of the fraction:

11/3-11/4=11/12

3. Therefore, the answer is 11/12

6 0

3 years ago

(with steps please) Find the inverse Laplace transform, f(t), of the function: 16/(s-4)^3

Stells [14]

Answer: The required inverse transform of the given function is

$f(t)=8t^2e^{4t}.$

Step-by-step explanation: We are given to find the inverse Laplace transform, f(t), of the following function :

$F(s)=\dfrac{16}{(s-4)^3}.$

We have the following Laplace formula :

$L\{t^ne^{at}\}=\dfrac{n!}{(s-a)^{n+1}}\\\\\\\Rightarrow L^{-1}\{\dfrac{1}{(s-a)^{n+1}}\}=\dfrac{t^ne^{at}}{n!}.$

Therefore, we get

$f(t)\\\\=L^{-1}\{\dfrac{16}{(s-4)^3}\}\\\\\\=16\times\dfrac{t^{3-1e^{4t}}}{(3-1)!}\\\\\\=\dfrac{16}{2}t^2e^{4t}\\\\\\=8t^2e^{4t}.$

Thus, the required inverse transform of the given function is

$f(t)=8t^2e^{4t}.$

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3 years ago

Finn is baking cakes for a party. The number of cups of sugar Finn needs is proportional to the number of cakes he plans to bak

pishuonlain [190]

1st and 4th answers are correct.

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3 years ago

Read 2 more answers

What is the u-intercept of this graph

forsale [732]

Answer:

-5

Step-by-step explanation:

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3 years ago

A bean plant grows at a constant rate for a month. After 10 days, the plant is

Rzqust [24]

The height of plant y =x+25

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3 years ago