i i e!
( x +1) 2 3 ( 2x + 3)! ( x + 1) 3 ( a + b) 5
2 2 2 2! 3! 5! 7
2 x! 3x! 1 = 0 ",! " >!!!
# 2x + 4y = 30 "! x + y = 12
sin x lim x!0 x x n! # $ & 1 lim 1 + ('% " n 1 1 lim lim x!+0 x x"!0 x
log x 2! x sin ax + cosbx
10! i= 1 i 10!
2! bx + (ax + c) dx "! 0 2 # e x dx
2 x y = ce y! = 2xy y! = 2xy 2 xy " y! = 0