The value of the limit when x tends to zero of the expression `[(a +x^2)^(1/2)-(a-x^2)^(1/2)]/x^2` is

The value of the limit when x tends to zero of the expression (e^(x)-1)/(x) is

The value of the limit when x tends to zero of the expression ([(1+x)^(n)-1])/(x) is

The value of the limit when x tends to zero of the expression (1+x)^((1)/(pi)) is

value of the limit when x tends to unity of the expression ([(3+x)^((1)/(2))-(5-x)^((1)/(2))])/(x^(2)-1) is

The value of the limit whenat the limit when x tends to 2 of the expression (x-2)^(-1)-(x^(2)-3x+2)^(-1) is

The value of the limit when n tends to infinity of the expression,(2n)-:[(2n-1)(3n+5)] is

If x in R , the least value of the expression (x^(2)-6x+5)/(x^(2)+2x+1) is

If x in R , the least value of the expression (x^(2)-6x+5)/(x^(2)+2x+1) is