Declining estrogen levels can trigger severe pain in the lower lumbar region. The lower back pain due to estrogen deficiency can best be described as excruciating pain which radiates down the buttocks and legs. The incapacitating lower back pain may also hamper every day tasks.
A Position vector is a vector that describes position of a point in space. Often the position of such a point is nothing but the x,y, and z coordinates of the point with origin as the reference point. The direction of such a vector is the arrow or...
Definition of a vector. A vector is an object that has both a magnitude and a direction. Geometrically, we can picture a vector as a directed line segment, whose length is the magnitude of the vector and with an arrow indicating the direction. The direction of the vector is from its tail to its head.