Question

medals for calculus(:

Answer 1

Find the amplitude and period of y = –3cos(2x + 3).
Use your calculator to graph the function and state its symmetry.
Find the first positive x-intercept using your calculator’s zero function.

Answer 2

ok

Answer 3

it is negative 3

Answer 4

@ganeshie8

Answer 5

this is the equation

Answer 6

enter the equation here
https://www.desmos.com/calculator

Answer 7

amplitude is -3 right?

Answer 8

yes take absolute value of -3 :

amplitude = |-3| = 3

Answer 9

amplitude is the \(distance\) between mean position and highest value, so it can never be negative

Answer 10

oh right, forgot about that, so the period would be 3pi/2?

Answer 11

do you mean period is 2pi/2 = pi ?

Answer 12

wait what? hahha

Answer 13

period of y = Acos(Bx + C) is 2pi/B

Answer 14

ohh so the period for this is 2pi/2

Answer 15

yes, simplifty

Answer 16

i graphed it, what would the symmetry be ?

Answer 17

it would just be pi right?

Answer 18

@ganeshie8

Answer 19

pi is the period

Answer 20

im not sure of symmetry, but i can help you with rest of the question if you want

Answer 21

yes please! @ganeshie8

Answer 22

what would be the first positive x intercept?

Answer 23

@hartnn do you know the symmetry?

Answer 24

where does the graph cut the x axis ?