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Mathematics 21 Online
OpenStudy (anonymous):

can someone help me with calculus?

OpenStudy (anonymous):

@jim_thompson5910

OpenStudy (anonymous):

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.

OpenStudy (anonymous):

OpenStudy (anonymous):

@iambatman

OpenStudy (anonymous):

hahahah sorry

OpenStudy (anonymous):

@Loser66

OpenStudy (anonymous):

i have done half of it, i need help with the other half

OpenStudy (anonymous):

I know the amplitude is 3 and the period is pi right?

OpenStudy (anonymous):

how do i find the symmetry?

OpenStudy (loser66):

cos is symmetry about x -axis (always)

OpenStudy (anonymous):

wait sorry

OpenStudy (anonymous):

symmetry is about x-axis right?

OpenStudy (loser66):

cos function has x-axis symmetry

OpenStudy (loser66):

first x- intercept is at x = 0.856

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