Question

Determine if the graph is symmetric about the x-axis, the y-axis, or the origin.

r = 9 sin 7θ

Answer 1

@Hoa any ideas

Answer 2

to my knowledge, I make a table and draw the graph of r . I just find out the value of r based on 4 value of theta. just 1/4 of the result, nothing to say

Answer 3

hold on, which grade are you?

Answer 4

I may overestimate the problem

Answer 5

12

Answer 6

AP math?

Answer 7

i suppose

Answer 8

Have you ever studied parametric function?

Answer 9

or polar equation?

Answer 10

i mean this is for colar coordinates

Answer 11

because if you haven't studied it yet, the problem might be even or odd function only. not that far

Answer 12

polar

Answer 13

of course, polar equation, but do you know how to draw it out

Answer 14

to me, at normal level, sin function is an odd one, it is symmetric about x axis, but to higher level like calculus 2-3, that polar equation must be drawn out to consider the changing of r respect to theta. that's why I ask you about your level

Answer 15

oh okay how would I do the equation to do it .... if there is an equation? is there