Directional derivative equation

How do you find the directional derivative? To find the directional derivative in the direction of the vector (1,2), we need to find a unit vector in the direction of the vector (1,2). We simply divide by the magnitude of (1,2). u=(1,2)∥(1,2)∥=(1,2)√12+22=(1,2)√5=(1/√5,2/√5). What is directional derivative of a function? In mathematics, the directional derivative of […]

Square foot equation

How many square feet is a 30×40? 1200 square feet How do you calculate inches into square feet? To convert square inches to square feet, multiply the square inch value by 0.00694 or divide by 144. How do you calculate square feet cost? The equation to calculate this metric is: price per square foot = […]

The dirac equation

Why is the Dirac equation important? It remains highly influential. It brought together two of the most important ideas in science: quantum mechanics, which describes the behaviour of tiny objects; and Einstein’s special theory of relativity, which describes the behaviour of fast-moving objects. How did Dirac predict the existence of the positron? Persuaded by Oppenheimer’s […]