1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anuta_ua [19.1K]
2 years ago
9

If y=a sin 3x+ b cos 3x and

la1" title="\frac{d^{2} y }{dx^{2} }" alt="\frac{d^{2} y }{dx^{2} }" align="absmiddle" class="latex-formula"> = ky, then what is the value of k?
Someone pls asnwer, correct answer will be marked as the brainiest. No spam!!
Mathematics
1 answer:
Black_prince [1.1K]2 years ago
3 0

Step-by-step explanation:

You have to do first and second derivatives :

y = a sin 3x + b cos 3x

dy/dx = 3a cos 3x - 3b sin 3x

d²y/dx² = - 9a sin 3x - 9b cos 3x

Next, you have to compare it :

let d²y/dx² = ky,

-9a sin 3x - 9b cos 3x = k(a sin 3x + b cos 3x)

-9(a sin 3x + b cos 3x) = k(a sin 3x + b cos 3x)

Therefore, k is equals to 9.

You might be interested in
A rectangular yard has dimensions 10 meters by 8 meters. In the middle of the yard is a rectangular pond of 8 square meters, lea
Nikolay [14]

hahahaha i had this same question in my grade

8 0
2 years ago
Help me with this,i really forgot how to do these type of questions
Montano1993 [528]
Work=speed times time (my equation to help me figure it out)

ok, 10 men take 84 days to complete a job
therefor, each man completes 1/10 of the job in 84 days
each man does 1/840 of the job per 1 day

so, if we had 5 more, or 15 men

15 times 1/840 times xdays=1 job complete
15/840 times xdays=1job
times both sides by 840/15
xdays=840/15
xdays=56
56 days it would take
5 0
2 years ago
France can complete 91 oil changes in 7 days how may oil changes can frances complete in 7 days
arsen [322]
Let oil change be x
91 / 7 = x / 11
(91 * 11) / 7 = x
13 * 11 = x
<span>143 = x Ans</span>
8 0
3 years ago
Which statement describes the translation of y = −one half (x − 2)2 − 2 from standard position?
kaheart [24]
A quadratic in vertex form can be represented as

y = a(x-h)^{2} +k

a represents reflection over the x-axis, and a vertical stretch or compress 
- is reflection and a fraction (1/2) represents a compression.

-h represents a shift of that many units to the right (-2 shifts to the right  two units)

k represents a shift up or down (-2 is shifting down 2 units_

Reflected over the x-axis, Vertically compressed by a factor of 1/2, shifted 2 units to the right, and shifted 2 units down
5 0
3 years ago
2. scatterplots asap help homework easy help plz
Lady bird [3.3K]

Answer:

The last one

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Wrapping paper comes in 3 colors, on either a regular roll or an extra wide roll, and with or without a pattern. How many combin
    13·1 answer
  • A rope is tied to the bottom of a hot air balloon as shown below. The rope makes an angle of 35 degrees with the ground distant
    14·1 answer
  • What's more 12cm or 98mm
    14·2 answers
  • Represent the following sentence as an algebraic expression, where "a number" is the
    13·1 answer
  • Please help asap 50 pts
    6·2 answers
  • Frank purchased 5 boxes of paper clips with 80 clips in each box . Cecily purchased 6 boxes of paper clips with 70 clips in each
    5·2 answers
  • Find the volume. Use 3.14 for straight pi. Round to the nearest hundredth if necessary.
    6·1 answer
  • Divide 405 in the ratio 4:11​
    13·1 answer
  • The ratio of angle measures is 1.2.2. Classify the triangle by its angle measures.
    5·1 answer
  • A supplier sold a scanner machine for Rs 41,400 with 15% VAT after allowing 10% discount on it's marked price and gained 20%. By
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!