At the of a standing wave, there is no displacement from the rest position

The correct answer is "node".

Explanation:

Stationary wave: It is also called standing wave. When two waves of equal frequency or wavelength travelling in opposite direction then  the standing wave will form.

These are those wave which do not appear to move but there is an oscillation up and down in same phase.

Anti node: It is the location in the wave where the amplitude is minimum or there is no displacement from the rest position.

Node: It is the location in the wave where the amplitude is maximum or there is maximum displacement from the rest position.

Therefore, At the node of a standing wave, there is no displacement from the rest position.

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.

answer: a) y=-8x+5

a) m= -8

b) m= -2

c) m= 7

d) m= 6