Question 609611
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First answer this:  Why do you think you are entitled to submit four questions in one post when the instructions for posting clearly state one question per post?


Second, each of your questions has a solution set with infinite elements with each unique element of the set dependent on the orientation of the axis of symmetry, i.e. horizontal, veritical, or some angle.


Repost, one problem at a time, and specify the orientation of your axis.


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
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