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steposvetlana [31]
3 years ago
14

Help please!!. Graph the function: f(x) = cos(2x)+1 Please plot 5 points on the graph

Mathematics
1 answer:
VLD [36.1K]3 years ago
5 0

Answer:

(0, 2) (pi/4, 1) (pi/2, 0) (3pi/4, 1) (pi, 2)

Step-by-step explanation:

New period is 2pi/2 = pi

Take intervals of new period/4 = pi/4

For the first positive cycle, take:

x= 0,

x= pi/4,

x= 2pi/4 = pi/2

x= 3pi/4

x= 4pi/4 = pi

Find the corresponding y values on the calculator (your calculator should be on radian mode)

x= 0, y= cos[2(0)]+1 = 2

x= pi/4 y= cos[2(pi/4)]+1 = 1

x = pi/2 y= cos[2(pi/2)]+1 = 0

x = 3pi/4 y= cos[2(3pi/4)]+1 = 1

x= pi y= cos[2(pi)]+1 = 2

(0, 2) (pi/4, 1) (pi/2, 0) (3pi/4, 1) (pi, 2)

These 5 coordinates should be enough for one cycle, copy the same cycle for "pi to 2pi" and the negative x-axis

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Find GCF of 40 and 120​
vagabundo [1.1K]

Answer:

Hi there!

<h2>Find the GCF of 40 and 120</h2>

  • The GCF of 40 and 120 is 40

40 ÷ 40 = 1

120 ÷ 40 = 3

<h3>Hope its help!</h3>
5 0
2 years ago
The estimated product of 20.7 and 9.18, after rounding both factors to the nearest whole number,
lesya692 [45]

Answer:

20.7 --> 21

9.18 --> 9

21x9 is 189, thus the estimated product is 189.

Let me know if this helps!

7 0
2 years ago
What is the equation of a line that passes through the point?
Artist 52 [7]
<h3>Answer: 3x-2y = 5 (choice A)</h3>

=====================================================

Explanation:

The given graph passes through (0,2) and (2,5)

The slope of this line is

m = (y2 - y1)/(x2 - x1)

m = (5-2)/(2-0)

m = 3/2

Since the y intercept is b = 2, we go from y = mx+b to y = (3/2)x+2, which is the equation of the graphed line shown.

Any parallel line will have the same slope, but a different y intercept.

-------------------

The parallel line must pass through (x,y) = (3,2). We'll use these coordinates along with m = 3/2 to find the y intercept b

y = mx+b

2 = (3/2)(3)+b

2 = 9/2+b

2-9/2 = b

4/2 - 9/2 = b

-5/2 = b

b = -5/2 ... is the new y intercept

The equation of the parallel line is y = (3/2)x-5/2, which is in slope intercept form

-------------------

Let's convert to standard form

y = (3/2)x-5/2

2y = 3x-5 .... multiply everything by the LCD 2 to clear out fractions

2y+5 = 3x

3x = 2y+5

3x-2y = 5 ... is the equation in standard form of the parallel line

-------------------

As a check, we can plug (x,y) = (3,2) into that last equation above to get

3x-2y = 5

3*3-2*2 = 5 ... replace x with 3, replace y with 2

9-4 = 5

5 = 5

Confirming that (x,y) = (3,2) is on the line.

3 0
3 years ago
Solve the equation <br> Answer options : y= 576 <br> Y= 16<br> Y=4 <br> Y=2
Maru [420]

Answer:

I believe the correct answer is option B

7 0
3 years ago
Please help me 15 points :)
maw [93]

Answer:I don't really know sorry but I think its the second one

Step-by-step explanation:

7 0
2 years ago
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