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Homework Help: Calc 3 tough not sure if right.

  1. Apr 11, 2012 #1
    Calc 3 tough!!!! not sure if right.

    1. The problem statement, all variables and given/known data
    Can you check if this is right?
    Let f(x,y) x^(2)y-3x^2-2y^2+11y+5
    1. find all critical points of f(x)
    crits at (0,11/4), (-1/3),(1/3)

    2. determing nature of the crit points you found
    D(-1,3) saddle
    D(0,11/4) max
    D(1,3) saddle

    3. find the extreme values of f(x) on the closed region bounded by y=X^3 and y=4.
    global min a f(0,0)=5
    global max at f(-2,4) and f(2,4) =21

    Sorry for the briefness. I wrote this out for the second time because it unlogged me in after I typed it all in and the brower ate my document :(.

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
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