__=||u|| ||v|| iff ||u+v ||< ||u ||+|| v||?__

Discover Questions

How would I sketch f(x,y) = x^2 + 9y^2 on the xy plane? I know it is a circle.? Find a basis of the subspace of R4 that consists of all vectors perpendicular to both [1,0,0,7] and [0,1,-9,5]. Please show work!? How many peaoyen in au? Reduce power to the 1st powers of sin(nx) and cos (mx): cos^4 (x) =? Find the area of the region between the curves x=1−y2 and x=y2−1. I'm a little confused because of the x= not y= and still can't figure it!?