A function `f` is defined as `f(x)={:{[(1)/(|x|)" if "|x|>=(1)/(2)],[a+bx^(2)" if "|x|<(1)/(2)]:}` if `f(x)` is derivable at `x=(1)/(2)` then `a-b=`

If a function f(x) is defined as f(x)={-x,x 1 then

A function f defined by f(x)=In(sqrt(x^(2)+1-x)) is

the function f:R rarr R defined as f(x)=x^(3) is

Led a function f be defined as f(x)=[(|x-1|)/(x^(2)+1) if x>-1 and x^(2) if x>=-1 Then the number of critical point(s) on the graph of this function is/are:

The function f defined by f(x)=(x+2)e^(-x) is