"Linear algebra" essay: Picking up flowers at dusk

• To pick up the flowers
• Don't forget beginner's mind
• Apply
• 've seen
• Bit by bit

Linear algebra is a compulsory course in the University of Science, I am ashamed to say that I have not learned, throughout the semester all the classes I was thinking about one thing: this thing is very complex, what can be used to do? Think back to the math lesson I had since I was a kid:

Primary school is subtraction, solves the problem of number, and then with negative numbers, decimals and fractions, no longer limited by the natural number, can be arbitrary to calculate any number, and then can enter the geometry, the common shape of the area calculation is a cinch, the equation began to chaos, Its magic can let us know the results and then to explore the reasons.

After entering junior middle school, begin to contact function, obviously still do not know the concrete result of the formula that oneself write down, but still can use it to carry on the calculation of the back; learn to understand the equation two times, let us first contact with the universal formula of this unknown Li thing, this time will accompany our entire high school career analytic geometry gorgeous debut, With the later study, more and more let us feel as if only to draw on the paper graphics there is no secret.

In high school, has learned to continue in depth: exponential logarithm function, a variety of function images; The trigonometric transformation has become a nightmare for many people, from the series to the limit to learn a probable, the probability is also involved. Mathematics seems more and more complex, but it is no longer as useful as it used to be.

Before junior high school mathematics is so practical, every learning a new knowledge can be practiced in life immediately, as if the game came to a new map as excited. But after high school mathematics, seems to start out of life, fortunately, with the spot of the sense of accomplishment and the pure interest in mathematics, the learning process is not so dull.

At the university, the difficulty of mathematics rises abruptly, advanced mathematics, probability theory, linear algebra wave upon wave flutter. I can no longer find the sense of accomplishment of the previous problem solving, because even the simplest topic is no longer known to me. The so-called interest in mathematics has also been erased. I even began to think that those who study mathematics, engaged in so many complex without humidifier formula and method, without any practical effect, if it had been insane, it must be idle too boring, take the mathematical formula when playing chess to entertain.

Until 10 years after graduation, as a programmer, I used the formula of linear algebra for the first time in the program. However, after so many years of encounter again, my heart is not disgusted, but heartily sigh: there is still such a wonderful way in the world, it set elegant, concise and practical in one. No more praise is too much, the person who can come up with these formulas is absolutely genius! I must write something out.

"Linear Algebra" series of essays started in the public number: the Cat library, which is sponsored by the director of the young bourgeoisie youth gathering, welcome attention.

"Linear algebra" essay: Picking up flowers at dusk