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
rosijanka [135]
2 years ago
10

What is the minimum value for y= 3cosx?

Mathematics
1 answer:
VashaNatasha [74]2 years ago
8 0
Take the deritive
y'=-3sinx
find whre it equals 0
it equals 0 at -pi, 0, pi, etc
find whre it changes from negative to positive
at -0.5pi, the derivitive is positive
at 0.5pi, the deritivie is negative
changes from positive to negative at x=0
that means that the max values are at pi and -pi in 2pi intervals

-pi, pi, 3pi, 5pi,etc
the min y value is -3

so the minimum(s) are/is at (2aπ,-3) where 'a' is an integer
You might be interested in
Calculate the sum of the first 30 terms in the sequence that begins with 70,65,60
Afina-wow [57]

\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\la\la\la\la\ddddddddddddddddddddddddddddddddcleverdddddd\ffffffffffffffffffffffffffffffffffffffff\pppppppppppppppppppppppppppppppppppp\ddddddddddddddddddd \displaystyle \Large \boldsymbol{} a_1=70  \  ; \ d=-5  \\\\S_n=\frac{a_1+a_n}{2} \cdot n \ ; \ a_n=a_1+(n-1)d \Longrightarrow \\\\\\ S_{30}=\frac{70+70-29\cdot5}{2} \cdot 30 =-75 \\\\\\Answer: S_{30}=-75

4 0
3 years ago
Janet runs one fourth of one half mile relay race what fraction of a mile does Janet run
LenaWriter [7]
One eighth of a mile.
7 0
2 years ago
Read 2 more answers
Find the sum or difference. Round your answer appropriately. 6.8 L + 5 L
marshall27 [118]
The answer could be 11.8L 
If rounded 12L
8 0
3 years ago
Read 2 more answers
Quinn has $31,700 in a savings
Masteriza [31]

Answer:

she will earn $6,657 in interest in 3 years

6 0
2 years ago
Find the probability that a point is chosen randomly inside the rectangle is in each given shape...
Arlecino [84]

By taking the quotients between the areas, we see that:

  • a) P = 0.275
  • b) P = 0.85

<h3>How to find the probabilities?</h3>

First we need to find the areas of the 3 shapes.

For the triangle, the area is:

T = 3*5/2 = 7.5

For the blue square, the area is:

S = 3*3 = 9

For the rectangle, the area is:

R = 10*6 = 60

Now, what is the probability that a random point lies on the triangle or in the square?

It is equal to the quotient between the areas of the two shapes and the total area of the rectangle, this is:

P= (7.5 + 9)/60 = 0.275

b) The area of the rectangle that is not the square is:

A = 60 - 9 = 51

Then the probability of not landing on the square is:

P' = 51/60 = 0.85

If you want to learn more about probability:

brainly.com/question/25870256

#SPJ1

6 0
2 years ago
Other questions:
  • Complete each step in the following solution.
    6·1 answer
  • Seven times a sum of a number and 1 is 63
    7·2 answers
  • I need help to find x​
    11·1 answer
  • At the grocery store, Charlie bought a jar of spaghetti sauce for $2.49, a package of spaghetti noodles for $1.58, and a gallon
    8·1 answer
  • PLEASE ANSWER ASAP!!
    7·1 answer
  • What is is the ratio of the rise to the run of a line in a coordinate plane
    9·1 answer
  • Given the expression 2(3x + 1), what would be the resulting equivalent expression after the distributive property is applied?
    14·2 answers
  • Leah has 6 1/4​ yards of ribbon to make bows. Each bow is made from a piece of ribbon that is 1/3 ​ yard long. What is the maxim
    13·1 answer
  • Trong mặt phẳng tọa độ, viết chương trình đường tròn (C') là ảnh của (C): x^2 +y^2 -2x+4y=0
    12·1 answer
  • PLEASE HELP WILL MARK BRAINLIEST FOR BEST ANSWER If you reflect (-2, -8) across both axes, which quadrant will it be in? Justify
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!