Question

Jose and Aparna were attempting to rotate the axes to eliminate the xy term for the equation . Jose used and Aparna used . The students got different equations in x’ and y’, but both were correct. Explain how this is possible.

Answer 1

jose used theta= -pi/8
aparna used theta= 3pi/8
the equation was: X^2 +2xy+ 3y^2-4x+5y-30

Answer 2

looks right

Answer 3

pi/2

Answer 4

and ellipse huh??

Answer 5

seems myko was right