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
Furkat [3]
3 years ago
6

What is the differentiation of 2cos2x

Mathematics
1 answer:
garri49 [273]3 years ago
3 0

2cos2x=y

dy/dx(2cos2x)=-4sin2x

d/du cosu= u'×cos'u=-u'×sinu

d/du sinu= u'×sin'u= u'×cosu

d/du tanu = u'×(1+tan²u)

d/du cotu = u'×-(1+cot²u)

proof for cosu :

cos2x= 1-2sin²x

or 2cosx²-1

or cos²x-sin²x

we will one of this fro example let's take the first one

d/dx 1-2sin²x=0-2×2(sinx)×cosx=-2sin2x

and we have 2 in the begining so its -4sin2x

You might be interested in
1 Harry Potter but cost $20. To purchase the whole set of seven books it would take 6 times as much. How much would it cost to b
svlad2 [7]

Answer:

$120

Step-by-step explanation:


7 0
3 years ago
Read 2 more answers
The graph shows the functions f(x), p(x), and g(x):
kondaur [170]
Part can’t get what ya want sooo idk what to tell u sorry not sorry
4 0
3 years ago
I NEED HELP PEOPLE LAST TIME
Hoochie [10]

29.

f(x) = -x^2-7x-6

As x \to \pm \infty, y \to - \infty.

This can be easily verified by looking at the graph (graph of a quadratic equation).

30.

The growth of a population is not linear, it's exponential.

31.

Exponential growth > polynomial, so y = 3^x.

35.

V(t) = 30\cdot (25)^{\frac{t}{20}}

The question is asking V(t) for t = 40.

V(40) = 30\cdot (25)^{\frac{40}{20}} \\~\\V(40) = 30\cdot 25^2 \\~\\V(40) = 30\cdot 625 \\~\\V(40) = 18750

36.

The point of symmetry of a quadratic equation y = ax^2+bx+c is at its vertice:

V_x = \dfrac{-b}{2a}

V_x = \dfrac{6}{2}

V_x = 3

The line is x= 3.

3 0
3 years ago
Please help!!!!!!! I only have 20 minutes left!!
slavikrds [6]

Step-by-step explanation:

You need to find the total number of students the pie chart will represent:

17 + 35 + 38 = 90

So you know, 360° represents 90 people

You can then find out the angle for each person: 360 ÷ 90 = 4

Each person is 4°

a)

1. 17 people took French so you would do 4° × 17 = 68°

2. 35 people took German so you would do 4° × 35 = 140°

3. 38 people took Italian so you would do 4° × 38 = 152°

b)

17 out of 90 people chose french so the probability would be 17/90

5 0
3 years ago
Choose 3 values that would make this inequality true. 8n + 4 ≤ 28 <br><br> Choices:3,6,13,2,5,14,1
Lelu [443]

Answer:

1,2,3

Step-by-step explanation:

1*8=8+4+12<28

2*8=16+4=20<28

3*8=24+4=28=28

6 0
3 years ago
Other questions:
  • What is the result when 3/8x + 2 1/5 - 3 1/2x - 4 1/10
    11·1 answer
  • Can anyone help me with this question and what the heck is it??
    12·1 answer
  • If 2y + 2w = x, then W, in terms of X and Y, is equal to? Choose the correct answer.
    11·2 answers
  • A frying pan has a radius of 14 centimeters. what is the circumference of the frying pan?
    15·1 answer
  • The coordinates of the vertices of a polygon are (-2, 1). (-3, 3), (-1, 5), (2, 4), and (2, 1). What is the perimeter of the pol
    9·1 answer
  • Find the distance between (-5, 7) and (11, -1) to the nearest tenth.
    9·1 answer
  • What does biased data mean?
    5·1 answer
  • A random number generator is used to create a list of 300 single-digit numbers. Of those 300 numbers, 146 are odd
    6·2 answers
  • Please help! Will mark brainliest
    5·2 answers
  • The volume of rectangular bar is 640 cubic units. The width is 3 units more than the height and the length is 1 unit more than t
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!