- #1
sk2nightfire
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Homework Statement
Find the domain/range:1)cos[arcsin(-2x)]=f(x)
2)sin[arccos(x)] + 2cos(arcsin(x)]=f(x)
3)sin[arccos(sin(arccos(x)))]
Homework Equations
arccos
domain:{-1,1]
range[0,pi]
arcsin
domain:{-1,1]
range[-pi/2,pi/2]
tan
domain:{-infinity,infinity]
range[-pi/2,pi/2]
The Attempt at a Solution
1)d: -1 < -2x<1
so domain is [-1/2,1/2]
How do I find the range? Its supposed to be [0,1]
2)[-1,1] is the domain
the range is supposed to be [0,3],but why?3)for domain i got [-1,1],but range?
range Is supposed to be [0,180 degrees],but once again,I'm lost.
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