# 21个能解释数学概念的GIF图片

“Let's face it; by and large math is not easy, but that's what makes it so rewarding when you conquer a problem, and reach new heights of understanding.”

Danica McKellar

As we usher in the start of a new school year, it’s time to hit the ground running in your classes! Math can be pretty tough, but since it is the language in which scientists interpret the Universe, there’s really no getting around learning it. Check out these gifs that will help you visualize some tricky aspects of math, so you can dominate your exams this year.

Via: giphy

Via: Hersfold via Wikimedia Commons

Via: mathcaptain

Via: imgur

Via: giphy

$\pi$就是直径是1的圆的一周长度 If you’re studying trig, you better get pretty comfortable with circles. Check out this visualization that shows what you’re really looking at when you deal with pi:

Via: imgur

Visualizing sine (red) on the Y axis and cosine (blue) on the X axis. The relative position of the circle is shown in black:

Via: imgur

Via: reddit

Via: imgur

cos是sin的导数 Cosine is the derivative of sine:

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Via: reddit

Via: imgur

Via: giphy

Via: giphy

Via: giphy

Via: tumblr

Via: tumblr

BONUS: If you need help remembering the quadratic formula, sing it to the tune of “Pop Goes The Weasel” and you will remember it for the rest of your life. “X equals opposite B, plus or minus the square root of B squared minus 4AC, all over 2A.”