Consider an electronic circuit with all sources turned off. In order to study the "thermal noise" or "Johnson noise" one can look at a given pair of terminals with an ocilloscope. They can study the noise voltage simply by evaluating the random process at two separate times and define a pair of random variables X and Y. Suppose it is widely established that for a particular circuit within every few (three) seconds the joint probability distribution of x and y is f(x.y)=k/y² for the region 1/2 < y < xy < 1. What is the probability that x<3/2 and y<2/3?
Angles in Circles
Angles within a circle are feasible to create with the help of different properties of the circle such as radii, tangents, and chords. The radius is the distance from the center of the circle to the circumference of the circle. A tangent is a line made perpendicular to the radius through its endpoint placed on the circle as well as the line drawn at right angles to a tangent across the point of contact when the circle passes through the center of the circle. The chord is a line segment with its endpoints on the circle. A secant line or secant is the infinite extension of the chord.
Arcs in Circles
A circular arc is the arc of a circle formed by two distinct points. It is a section or segment of the circumference of a circle. A straight line passing through the center connecting the two distinct ends of the arc is termed a semi-circular arc.
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