For Exercises 27 through 36, find

\\\\lim_(x->+\\\\infty )f(x)

and

\\\\lim_(x->-\\\\infty )f(x)

. If the limiting value is infinite, indicate whether it is

+\\\\infty

or

-\\\\infty

.\ 27.

f(x)=x^(3)-4x^(2)-4

\ 28.

f(x)=1-x+2x^(2)-3x^(3)

\ 29.

f(x)=(1-2x)(x+5)

\ 30.

f(x)=(1+x^(2))^(3)

\ 31.

f(x)=(x^(2)-2x+3)/(2x^(2)+5x+1)

\ 32.

f(x)=(1-3x^(3))/(2x^(3)-6x+2)

\ 33.

f(x)=(2x+1)/(3x^(2)+2x-7)

\ 34.

f(x)=(x^(2)+x-5)/(1-2x-x^(3))

\ 35.

f(x)=(3x^(2)-6x+2)/(2x-9)

\ 36.

f(x)=(1-2x^(3))/(x+1)

For Exercises 27 through 36, find limx+f(x) and limxf(x). If the limiting value is infinite, indicate whether it is + or . 27. f(x)=x34x24 28. f(x)=1x+2x23x3 29. f(x)=(12x)(x+5) 30. f(x)=(1+x2)3 31. f(x)=2x2+5x+1x22x+3 32. f(x)=2x36x+213x3 33. f(x)=3x2+2x72x+1 34. f(x)=12xx3x2+x5 35. f(x)=2x93x26x+2 36. f(x)=x+112x3