Kevin, 9 year old kid, shows you how he does mental calculus.
He has been practicing mental calculus for some times on his own. He knows most of calculus can be working mentally except some very long problems. Here he solves integrals of Sin ^2 and Tan ^2.
To be able to master mental calculus. First, one has to be extremely good in both derivative and integral calculus. Second, a person much have a very strong photographic memory. I believe only children have this ability not us.
Kevin is not only know most of multiplication mental math such as numbers time with 11 or 12; one, two and three digits square; multiply 2x2, 3x3,4x4 digits but created a method to handle all these mental math in just one rule.
Profile:
Kevin learned algebra at 4 year old. He could solve basically any random algebra equation at 5 year old.
At eight years old, he began to teach both derivative and integral calculus. He also could derive calculus equations and proof difficult calculus formulas.
At 9, He successfully reduced conventional techniques of integration methods from several to just two methods for himself and for his 6 year old sister. He call it either easy or difficult method. To solve difficult equations, he will spend about several minutes for each formula. ( You can see kid proof difficult calculus equation.) For majority of integral calculus is fall within his easy method that he can solve them in just a few lines.
To solve purely common integral calculus short and fast, he invented this mental calculus that he can integrate equations mentally and attract each answer in a single line. He is the only kid or the person has such capacity ever documented up to date- He used he mental math method to solve calculus problem and explain it to the TV interviewer. You already saw the similar video above kid doing mental calculus but not basic mental math for how he attract each answer.
Because of his ability and methods, he can solve purely, and common integral equation in just one or a few lines
Finally, I believe most kids can be very smart, genius, talented, gifted and whiz in math if they have access to parents who know math or teachers who teach them.
Some children also can even learn algebra at 3, calculus at 4 and differential equation at 5. (Kevin's sister have been learning some differential equations at 6) If more normal kids can do differential at 7 or 8 as well as so call child prodigy, we can concluded that child prodigy is made.
End!
9 year old kid doing mental calculus- not basic mental math
9 year old kid doing mental calculus.
9 year old kid doing mental calculus.
9 year old kid doing mental calculus.
kid doing mental calculus
Mental calculus
