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
Kazeer [188]
3 years ago
11

Where are the minimum and maximum values for f(x)=−2+4cosx on the interval [0,2π]?

Mathematics
1 answer:
Amanda [17]3 years ago
4 0

Answer:

f(x) =  - 2 + 4 \cos(x)  \\ for \: minimum \:  \: x = 0 \\ f(0) =  - 2 + 4 \cos(0)  \\ minimum \: value = 2 \\ for \: maximum \: value \:  \: x = 2\pi \\ f(2\pi) =  - 2 + 4 \cos(2\pi)  \\ maximum \: value =  - 2

You might be interested in
Solve.<br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B3%20x%20-%2011%7D%20%20-%20%20%5Csqrt%7Bx%7D%20%20%2B%205%20%3D%206" id
ICE Princess25 [194]
Solve for x:
5 - sqrt(x) + sqrt(3 x - 11) = 6

Subtract 5 from both sides:
sqrt(3 x - 11) - sqrt(x) = 1

(sqrt(3 x - 11) - sqrt(x))^2 = -11 + 4 x - 2 sqrt(x) sqrt(3 x - 11) = -11 + 4 x - 2 sqrt(x (3 x - 11)) = 1:
-11 + 4 x - 2 sqrt(x (3 x - 11)) = 1

Subtract 4 x - 11 from both sides:
-2 sqrt(x (3 x - 11)) = 12 - 4 x

Raise both sides to the power of two:
4 x (3 x - 11) = (12 - 4 x)^2

Expand out terms of the left hand side:
12 x^2 - 44 x = (12 - 4 x)^2

Expand out terms of the right hand side:
12 x^2 - 44 x = 16 x^2 - 96 x + 144

Subtract 16 x^2 - 96 x + 144 from both sides:
-4 x^2 + 52 x - 144 = 0

The left hand side factors into a product with three terms:
-4 (x - 9) (x - 4) = 0

Divide both sides by -4:
(x - 9) (x - 4) = 0

Split into two equations:
x - 9 = 0 or x - 4 = 0

Add 9 to both sides:
x = 9 or x - 4 = 0

Add 4 to both sides:
x = 9 or x = 4

5 - sqrt(x) + sqrt(3 x - 11) ⇒ 5 - sqrt(4) + sqrt(3×4 - 11) = 4:
So this solution is incorrect

5 - sqrt(x) + sqrt(3 x - 11) ⇒ 5 - sqrt(9) + sqrt(3×9 - 11) = 6:
So this solution is correct

The solution is:
Answer:  x = 9
5 0
3 years ago
What is the domain of the function f (x)=x^2+1
denis23 [38]
Alright, so since anything can be squared, the domain is (-inf, inf)
6 0
3 years ago
George studied 3/4 hour on monday and 7/8 hour on tuesday. how long did he study altogether on both days?
pentagon [3]
\dfrac{3}{4}+\dfrac{7}{8}=\dfrac{3\cdot2}{4\cdot2}+\dfrac{7}{8}=\dfrac{6}{8}+\dfrac{7}{8}=\dfrac{6+7}{8}=\dfrac{13}{8}=\dfrac{8+5}{8}=\dfrac{8}{8}+\dfrac{5}{8}=1\dfrac{5}{8}\\\\Answer:\boxed{1\frac{5}{8}\ hour.}
5 0
3 years ago
POSSIBLE POINTS 10
Olin [163]
94.2 in would be your answer
5 0
3 years ago
Which expression is equivalent to n + n - .18n
wariber [46]

Answer:7500

Step-by-step explanation:

if you divide 15000 and 2 you get 7500.and if you get 7500 you have to multiply to check if its correct so 7500 times 2 equals 15000. So the answer is 7500.

8 0
3 years ago
Other questions:
  • If Mags (m) is 34 years old, how old is Vector (v)
    7·1 answer
  • Translate this phrase into an inequality. The sum of two consecutive even integers is at most seven more than half the sum of th
    15·1 answer
  • Can a teacher at school make you take off your jacket of and not to enter the class with it
    9·2 answers
  • intrastate 70 stretches almost 2 ^ 3 * 5 ^ 2 * 11 miles across the United States. About how many miles long is the interest 70?
    10·1 answer
  • How would I solve for this?
    9·1 answer
  • Which expression is equivalent to t2 – 36?
    11·1 answer
  • 1. Mrs. Gribble went to the grocery store and spent $10.80 on pizzas, $4 on apples, and $29.99 on diapers. How much money did Mr
    9·1 answer
  • How do you determine which variable is independent<br> and which one is independent?
    8·1 answer
  • Seth needs to buy mulch to cover a circular garden. The garden has a radius of 5ft. Mulch costs $0.25 per square foot. How much
    12·1 answer
  • Need help with geometry (number 19)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!