Recent content by manjum423

  1. M

    Change of variables cylindrical coordinates

    Homework Statement Let S be the part of the cylinder of radius 9 centered about z-axis and bounded by y >= 0; z = -17; z = 17. Evaluate \iint xy^2z^2 Homework Equations The Attempt at a Solution So I use the equation x^2 + y^2 \leq 9, meaning that r goes from 0 to 3 Since y...
  2. M

    Limit in several variables

    Evaluate the limit or prove that it does not exist.. f(x,y) -> (0,0) 3xy/((x^2)+(4y^2)) The attempt at a solution: Set x to 0 and you get 0 set y to 0 and you get 0 set y=x and you get 3x^2/5x^2 = 3/5 This means that limit does not exist. Is this correct? If this is correct, how...
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