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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