Question

X=R d(x,y)=|x| + |y| if x not equal to y...d( x,y)=0 if x=y. Is d a metric on R.?​

Answer 1

Step-by-step explanation:

Neurons (also called neurones or nerve cells) are the fundamental units of the brain and nervous system, the cells responsible for receiving sensory input from the external world, for sending motor commands to our muscles, and for transforming and relaying the electrical signals at every step in between.

Answer 2

Step-by-step explanation:

the science, art, or practice of cultivating the soil, producing crops, and raising livestock and in varying degrees the preparation and marketing of the resulting products cleared the land to use it for agriculture.