1. The concave mirror shown below has an object placed 40 cm in front of it. An image is formed in 55 cm in front of the mirror. What is the nature of the image? Calculate the magnification of the image and
the focal length of the mirror.

i think it because equal matrices have equal dimensions, only square matrices can be symmetric. for all indices and . every square diagonal matrix is symmetric, since all off-diagonal elements are zero. in linear algebra, a real symmetric matrix represents a self-adjoint operator over a real inner product space.

where is the circuit diagram ?

the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement