Binh HoWhy is the derivative of sine cosine?During the calculus class, I was falling asleep until my teacher introduced us with the new concept: derivative. After several lessons on…May 22May 22
Binh HoDeriving the formula for a triangle’s area using integration.Have you ever wondered why the area of a triangle is (AH)/2? Of course, we all learned in school about how they derived this formula by…Apr 20Apr 20
Binh HoWhy can’t we draw a kite without lifting the pen and retracing the same line?Have you ever tried drawing this kite without lifting your pen and without retracing the same line? I bet that after tens and hundreds of…Apr 2Apr 2
Binh HoWhy is the area of a circle πr^2?Have you ever been asked to find the area of a circle? If yes, then what kind of formula did you use?Mar 17Mar 17
Binh HoWhy is Pi so weird?We all know that the circumference for any circle is always equal to two times its radius times pi. Many of us even go further by asking…Feb 116Feb 116
Binh HoWhy a straight line is always the shortest path between two points in 2D?Have you ever run straight toward someone you like, the moment you see them? If your answer is yes, then why didn’t you choose a more…Feb 91Feb 91
Binh HoWhy is the sum of two primes greater than 2 always even?3, 5, 7, 11, 13, 17, 19, 23,…Jan 171Jan 171
Binh HoHow to study math?I guess you clicked on this blog because you’re needing some advice to start your math learning journey. Don’t worry because in this blog…Jan 141Jan 141
Binh HoHow many revolutions does it take for a coin to roll an exact circle around another identical…At a first glance, it may seem like a simple question. If the two coins are identical with the same circumference then it must only take…Jan 102Jan 102
Binh HoWhy are square numbers so odd?“4 minus 1 is 3; 9 minus 4 is 5; 16 minus 9 is 7….” I remember myself muttering some math operations in the middle of dinner. As a math…Jan 12Jan 12