Sketch the region enclosed by the given curves. y = 3 cos(5x), y = 3 − 3 cos(5x), 0 ≤ x ≤ π/5

This question is based on the graph. Therefore, these are the points for first curve ( 0, 3) and ( , -3) for plotting the graph and these are the points  ( 0, 0) and ( , 6) for plotting the graph.

Given:

y = 3 cos(5x),

y = 3 − 3 cos(5x), 0 ≤ x ≤ π/5

In this question we have to sketch the region enclosed by the given curves.

Now we have to plotting the graphs  of both the curves.

For first curve: y = 3 cos(5x), 0 ≤ x ≤ π/5

Putting x = 0 in first equation.

We get,

y = 3

Now putting x =    in first equation.

We get,

y = -3

Therefore, these are the points ( 0, 3) and ( , -3) for plotting the graph.

Now for second curve:  y = 3 − 3 cos(5x), 0 ≤ x ≤ π/5

Putting x = 0 in first equation.

We get,

y = 0

Now putting x =    in first equation.

We get,

y = 6

Therefore, these are the points  ( 0, 0) and ( , 6) for plotting the graph.

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step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1