"Rocket science" isn't really the strict name of a single discipline; it's more of a casual term for rocket technology and space propulsion engineering. It refers to the broad engineering field that studies rocket design, manufacturing, launching, and how they work in a vacuum.
math system
The golden ratio is when you divide a whole into two parts, and the ratio of the larger part to the whole is equal to the ratio of the smaller part to the larger part, which is about 0.618.
Chemistry is a basic natural science that studies the composition, structure, properties, and changes of matter at the level of molecules and atoms. It not only explains what the world is made of but also aims to create new substances to meet human needs.
Simplifying is the process of turning complex mathematical expressions into simpler forms, mainly used in subjects like math, physics, and chemistry.
A radian is a unit for measuring angles. Simply put, it measures the size of an angle using the ratio of the arc length to the radius, and its symbol is rad. When the arc length of a circle exactly equals its radius, the central angle corresponding to that arc is 1 radian, which is roughly 57.3 degrees.
Measuring possibility (that is, probability) is a core concept in math, statistics, and decision science, mainly using probability theory to turn uncertainty into a number between 0 and 1.
Aviation refers to the activity of flying aircraft within Earth's atmosphere. Things like the airplanes and helicopters we ride fall into this category, mainly using aerodynamics to lift off, which is different from going into outer space.
The integral of a function is a core concept in calculus. Simply put, it's the process of finding the antiderivative or calculating the accumulated quantity. It mainly falls into two categories: indefinite integrals and definite integrals.
A derivative is actually like a 'speedometer' for a function. If you can calculate this speed at every point in a certain interval, you get the derivative function, usually denoted as f'(x). It not only tells you whether the function is speeding up or slowing down at a certain point, but also lets you directly calculate the slope of the tangent line at that point.