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unf0r5ak3n
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Homework Statement
let f(x) = sqrt(1-sin(x))
Homework Equations
What is the domain of f?
What is the domain of f'(x)?
The Attempt at a Solution
I understand that the domain of f is all real numbers not including every increment of 90 degrees, but I am not sure how to state that.
I also found that f'(x) = (1/2 -sin(x))(-cos(x)) I am not sure if that's correct though