steps to find the range of function with two variables

• October 15th 2012, 02:48 PM
nursyafika
steps to find the range of function with two variables
hi everyone!
i need your opinion on how to find range of function.
eg: f(x,y)=x2+y2-1
• October 15th 2012, 03:04 PM
TheEmptySet
Re: steps to find the range of function with two variables
Quote:

Originally Posted by nursyafika
hi everyone!
i need your opinion on how to find range of function.
eg: f(x,y)=x2+y2-1
$x^2 \ge 0$ and $y^2 \ge 0$
$f(x,y)=x^2+y^2-1 \ge 0+0-1=-1$