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 Jul30 awarded Critic Jun20 asked Solve non-homogeneous linear recurrence Jun18 awarded Revival Jun18 revised If the absolute value of an analytic function $f$ is a constant, must $f$ be a constant? deleted 4 characters in body Jun17 awarded Teacher Jun17 answered If the absolute value of an analytic function $f$ is a constant, must $f$ be a constant? Dec17 revised Triple Integral in Spherical Co-ordinates deleted 3 characters in body Dec16 awarded Supporter Dec16 accepted Triple Integral in Spherical Co-ordinates Dec14 asked Triple Integral in Spherical Co-ordinates Oct7 accepted Orthogonal Matrix Proof Oct7 comment Orthogonal Matrix Proof I did not know (1), and the proof follows immediately after. Could you prove that result? Oct7 comment Orthogonal Matrix Proof Do I know anything useful about ? Oct7 comment Orthogonal Matrix Proof @ChristopherA.Wong: I know that $[\vec{x}]_B$ = [$c_1 ... c_n$] where $\vec{x} = c_1v_1 + ... + c_nv_n$ oh, and $\vec{x} = c_1v_1 + ... c_nv_n$ since {$v_1,...,v_n$} is a basis. I think i might have it now. Oct7 asked Orthogonal Matrix Proof Jul26 awarded Scholar Jul26 accepted Area/Arc Length of a Hyperbolic Segment Jul26 comment Area/Arc Length of a Hyperbolic Segment @Beta: i dont know anything about the parameters or formula for the hyperbola, see my edits regarding "height of the segment" Jul26 revised Area/Arc Length of a Hyperbolic Segment added 59 characters in body Jul26 awarded Student