Recent content by zs96742

  1. Z

    Interpolating Data with the Discrete Fourier Transform

    Hello everyone: I have some question using the FFT in MATLAB for data interpolating. I don't know what the relation between the normal Fourier series and the real, image number. For example, given a set of measurement data, I can use the curve fitting toolbox to fit a curve. The general...
  2. Z

    Calculate double integral of the intersection of the ellipse and circle

    In this case, I have to separate the area, any chance I can use polar coordinate?
  3. Z

    Calculate double integral of the intersection of the ellipse and circle

    Yes, I forgot this, the center of the circle and the ellipse, the radius, the a and b are all known. That means I can calculate the intersection points. If you chose the circle center as the origin, what's the equation for the ellipse?
  4. Z

    Calculate double integral of the intersection of the ellipse and circle

    how to calculate the double integral of f(x,y) within the intersected area? f(x,y)=a0+a1y+a2x+a3xy The area is the intersection of an ellipse and a circle. Any help will be appreciated, I don't know how to do this. can I use x=racosθ,y=rbsinθ to transformer the ellipse and...
    • zs96742
    • Thread
    • Circle Double integral Ellipse Integral Intersection
    • Replies: 5
    • Forum: Calculus
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