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December 21st, 2018, 06:15 AM   #1
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Smile functions of several variables

How do I find the range for
g(x,y) = sqrt(y-x) - ln (9 - x^2 - y^2)?
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Last edited by skipjack; December 21st, 2018 at 06:32 AM.
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December 21st, 2018, 06:31 AM   #2
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What is the range of -ln(9 - x² - y²)?
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