The limit :limx->2 ( 3x – 9)/ x-2 represents the derivative

The limit :limx->2 ( 3x – 9)/ x-2 represents the derivative Find the first derivative of y = x^(x - 2) limx趋近于3,x/(x^2-9) 求极限 Let f be the function with derivative given by f'(x)=sin(x*x Find all possible functions with the derivative f'(x)= cosx 问三道微积分题目 急find first derivative x^3-xy+y^2=4f(x)=sec^2tanxf( 1.If [x] represents the greatest integer function,then [x] r 求极限：1、limx→﹢∞e^x-e^-x/e6x+e^-x：2、limx→0x-arcsinx/x^3：3、limx→ limx→∞(1+1/2x)^3x+2 limx趋向1 2x+3/x-1 求极限 limx趋近于无穷2x^3-x＋1 limx趋向无穷大,(1+1/x)^3x+2=?