Posted by maria on Sunday, March 11, 2012 at 1:00pm.
a)find the first partial derivatives of f(x y)= x √1+y^2
b)find the first partial derivatives of f(x,y)= e^x ln y at the point (0,e)

calculus  Steve, Sunday, March 11, 2012 at 1:44pm
f(x,y) = x√(1+y^2)
fx = (√1+y^2)
fy = xy/(√1+y^2)
Just treat the other variables as constants.

calculus  Anonymous, Monday, March 12, 2012 at 11:33am
fx=e^xlny
fy=e^x/y
fx=e^(0)ln(e)=1
fy=1/e
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