Recent content by Kolodny

  1. K

    What is the series derivative of sin(kx)?

    You haven't showed your attempt at a solution, just how you plugged the equation into WolframAlpha. I would suggest writing out the first several terms of the infinite series for sin(kx) and taking the derivative of those. From there, the connection to k*cos(kx) should be clear.
  2. K

    Thermodynamics - Quasi 1-D Air Mixture

    Homework Statement Constant area mixing tube with stations (1) and (2) (i.e., (1)-->-->--(2)) At station (1): - Mixture of two air streams, defined as Primary (p) and Secondary (s) u_p = 300 m/s T_p = 900K u_s = 30 m/s T_s = 300K p_1 = 0.1 MPa (A_p)/(A_s) = 1/3 1-D flow assumed...