Algebra
(0,1)
Math - Trig - Double Angles
2sin(x+y)sin(x-y) = cos2y - cos2x lhs 2(sinx cosy + cosx siny) (sin x cos y – cosx siny) 2( sin^2xcos^2y – sinxcosycosxsiny + sinxcosycosxsiny – cos^2xsin^2y) 2(sin^2xcos^2y – cos^2xsin^2y) 2[(1-cos^2x)cos^2y – (1-cos^2y)cos^2x] 2[cos^2y-cos^2xcos^2y &...
Math - Trig - Double Angles
sin2x / 1 - cos2x = cotx 2sinxcosx / 1 - (1-2sin^2x) 2sinxcosx / 2sin^2x cosx/sinx = cotx
ManEcon
The belief that monetary policy can be effective in changing aggregate demand and that interest rates are the critical monetary variable is associated with (A)Modern Keynesians (B)New classical economists (C)Monetarists (D) All of the above
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