- Evaluate in terms of area: integral (-1,1) of (sqrt 1-x^2) dx?

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what does mean? Thank you? Economists will always reach the same conclusion in their positive analyses.? Tan2x=2tanx/1+tan^2x... my math teacher gave me this but I thought the double-angle identity was with a denominator 1-tan^2x? The product of two consecutive room numbers is 240. Find the room numbers. x= x+1=? If two runners on a curved track move at different speed but same angular velocity is the one moving faster experiences big Time dilation?