Question

Which function is odd? Check all that apply.
A. y = sec x
B. y = sin x
C. y = cot x
D. y = csc x

Answer 1

B

Answer 2

Check the graphic

Answer 3

just substitute x with -x if you get +x means is even, if you get -x means is odd

Answer 4

I know its b and d but not sure of c?

Answer 5

y = sec x = 1/cos x
substitute -x
1/ cos -x =1/cos x = sec x = y -----> even

y = sin x
substitute -x
sin -x = - sin x = -y --------> odd

y= cot x = cos x/sin x
substitute -x
cos -x / sin -x = cos x / (-sin x) = - cot x = -y ---------> odd

y = csc x = 1 / sin x
substitute -x
1/ sin -x = 1/ (-sin x)=-csc x =-y ----------> odd

Answer 6

Thank You!

Answer 7

welcome @zab505