Minimum Memorize in Math – Go by 1st Principle

Do not memorize these:
\boxed { \cos 3A = 4\cos^{3} A - 3\cos A }

\boxed {\displaystyle \int \frac {dx}{\sec x}  =  \int  \frac {1}{\sec x} \frac {\sec x + \tan x}{\sec x + \tan x}dx }

However, it helps, though, to remember:
Nine Zulu Queens Rule China”
\boxed { \mathbb{N}\subset \mathbb{ Z }\subset \mathbb{ Q }\subset \mathbb{ R}  \subset \mathbb{ C } }

http://mathtuition88.com/2014/05/17/how-much-mathematics-should-a-student-memorize/

Advertisements

One thought on “Minimum Memorize in Math – Go by 1st Principle

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s