Question

let R be a ring
define function f:R toR by f(a)=a
a belongs to R
check it us endomorphisim or not and find its kernal={0}​

Answer 1

Answer:

the greatest distance that a wave, especially a sound or radio wave, moves up and down

Step-by-step explanation:

the greatest distance that a wave, especially a sound or radio wave, moves up and down