# Math Help - max. and min. in f(x,y)

1. ## max. and min. in f(x,y)

Find Max. and Min. value of $\sqrt{(x-4)^2+(y-3)^2}+\sqrt{x^2+y^2}$

I have Got Min Using Geometry whic is $=5$

But How can I find Max. value

is it $=\infty$

help required

Thanks

2. ## Re: max. and min. in f(x,y)

Originally Posted by jacks
Find Max. and Min. value of $\sqrt{(x-4)^2+(y-3)^2}+\sqrt{x^2+y^2}$

I have Got Min Using Geometry whic is $=5$

But How can I find Max. value

is it $=\infty$

help required

Thanks
Seeing as you've posted in Calculus, it might be a good idea to use some Calculus...