Question

Can someone help me explain this?

Answer 1

Explain what?

Answer 2

I had an essay question:
Find all solutions to the equation.

7 sin2x - 14 sin x + 2 = -5
And I put this:
First you add 5, then divide by seven, and get sin^2x -2sin x +1. Then you factor, and get (sin x-1)^2. Because this doesn't have a restricted domain, there are an infinite number of solutions.

And my teacher put this:
Please schedule a call so you can clarify your last sentence for me. :-) Mr. Harmon

How do I explain that?

Answer 3

I mean, the Domain is AR#'s, right?

Answer 4

Wouldn't the equation be sin^2x -2sin x +1 = 0

Answer 5

Well, yes. But I just don't get how to "clarify" that it has an infinite number of solutions.. I kind of got some help on this question..

Answer 6

I don't why it doesn't have a restricted domain and has an infinite number of solutions.

Answer 7

Doesn't that go together?

Answer 8

I don't know. I just thought you might want someone to calculate an answer - NOT explanations of restricted domains.
Oh well.

Answer 9

No. I wanted help explaining the answer. "Can someone help me explain this?"

Answer 10

Well then no I can't.

Answer 11

Thank you.. God bless you, sir.

Answer 12

okay