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
trasher [3.6K]
4 years ago
8

To evaluate ∫ 3x2 cos (2x3 - 4) dx, it is necessary to let A. u = 6x. B. u = 6x2 C. u = 2x3 -4 D. u = 3x2

Mathematics
1 answer:
strojnjashka [21]4 years ago
5 0
The correct answer is C, to let u = 2x^3 - 4.
This allows du = 6x^2 dx, and the integral will become:
integral of (1/2)(du) cos(u), which can be integrated in a straightforward manner.
The rule of thumb is to set the entire expression of the trigonometric function as a single variable if possible, to make it simpler.
You might be interested in
Tyler is building a fish tank in the shape of a sphere that has a diameter of 18 inches. Based on Tyler's research, it is recomm
Karo-lina-s [1.5K]

Answer: 4 fishes

Step-by-step explanation:

Hi, to answer this question we have to apply the next formula:  

Volume of a sphere = 4/3 x π x (diameter/2)^3  

Replacing with the values given:  

V = 4/3 x π x (18/2)^3  

v = 4/3 x π x (9)^3 = 3,053.63 in3  

Next, we have to divide the volume of the tank by 693 in3 (volume for each fish)

3,053.63/693 =4.40 = 4 fishes

Feel free to ask for more if needed or if you did not understand something.  

7 0
4 years ago
A gardener uses 1\3 of liter of water to water 2\7 of the garden
andrew11 [14]
The answer is 13 because you add.
4 0
4 years ago
ILL MARK BRAINLIST !!! SHOW WORK
Sedbober [7]

Answer:

8748

Step-by-step explanation:

a^5b^-6

when replacing the variables with their values :

3^5 -6^2

3^5 = 3*3*3*3*3 = 243

(-6)^ 2 = 36

243 * 36 =

8748

8 0
4 years ago
Does this graph represent a function? Why or why not?
Dafna1 [17]
A. Yes because it passes the vertical line test
6 0
3 years ago
Read 2 more answers
Will give brainiest if right. The table below shows worldwide smartphone sales by the vendor. Based on the information in the ta
Leya [2.2K]

D. Apple’s market share fell about 4% from 2012 to 2013.

7 0
3 years ago
Other questions:
  • Classify the triangle by its side lengths.
    15·1 answer
  • What number is divisible by ?<br> 2 3 5 or 10 <br><br> a)130<br> b)123<br> c)555<br> d)5564
    13·1 answer
  • Given that P = (2, 9) and Q = (4, 14), find the component form and magnitude of vector PQ.
    5·1 answer
  • Kayla has a puppy that weighs 5 pounds. Kayla's brother Manuel has a puppy that is 65 times the weight of Kayla's puppy. Which s
    7·1 answer
  • Ann and Tom want to establish a fund for their​ grandson's college education. What lump sum must they deposit at an 8.2​% annual
    7·2 answers
  • 1. Convert 60° to radians.
    7·1 answer
  • WILL GIVE BRAINLIEST what is the range of this function?
    8·2 answers
  • ............please help
    14·1 answer
  • I need help on this :( pls help me
    13·1 answer
  • Find the measure of the indicated angle.<br> N<br> O<br> m 20<br> 6yº<br> 3y - 12°<br> O<br> M
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!