Got a problem which should be easy but having trouble...(adsbygoogle = window.adsbygoogle || []).push({});

"Find the equation of the tangent plane to z=f(x,y)=x^2 + y^2 - 1 at point (1,1,1)

"Find an equation to a plane that is perpendicular to that tangent plane and also passes through the point (1,1,1)

Thanks!

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework help

**Physics Forums | Science Articles, Homework Help, Discussion**