if you dont believe that,try writing the numbers!
source : http://justsimplestuff.wordpress.comTo multiply any two digit number by 11:
The only thing tricky to remember is that if the result of the addition is greater than 9, you only put the "ones" digit in the hole and carry the "tens" digit from the addition. For example 11 x 57 ... 5__7 ... 5+7=12 ... put the 2 in the hole and add the 1 from the 12 to the 5 in to get 6 for a result of 627 ... 11 x 57 = 627
Practice it on paper first!
source: http://www.angelfire.com/me/marmalade/mathtips.html
Satu teknik dalam further pure yang baru aku belajar tadi. Sedikit sebanyak dapat mengurangkan pembaziran masa jika soalan sebegini keluar dalam paper Mei June 08.
Contoh soalan
Show that
d/dx [x(1 + x³)^-n]= -(3n-1)(1 + x³)^-n + 3n(1 + x³)^-n-1
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Kita selalu sangkut sampai sini
d/dx[x(1 + x³)^-n] = -3nx³(1 + x³)^-n-1 + (1 + x³)^-n
Xperlu buat partial fraction
Aku dah
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When it comes to the SAT, "one" is not the loneliest number. Truth be told, the number one seems to be everywhere on the SAT. It's a good friend of exponents and an even better friend of fractions. Considering its popularity, let's take a look at the "must knows" about the number one!
