Question

Q. The equation u_xx 〖-4u〗_xy+ 4uyy=0 ?
)parabolic
b)hyperbolic
c)Elliptic
d) None of above

Answer 1

a)parabollic.

After using the formula

$$B^2 - 4AC$$

we get

$$(-4)^2 - 4(1)(4) = 0,$$

therefore equation type is parabolic