in this exercises 37 and 39, (a) use the intermediate value theorem and a graphing utility to find graphically any intervals of length 1 in which the polynomial function is guaranteed to have a zero and, (b) use the zero or root feature of a graphing utility to approximate the real zeros of the function. verify your results in part (a) by using the table feature of a graphing utility.
37. f(x)= x^3 +2x^2 -x -1
39. f(x)= x^4-6x^2 -4

Question

in this exercises 37 and 39, (a) use the intermediate value theorem and a graphing utility to find graphically any intervals of length 1 in which the  polynomial function is guaranteed to have a zero and, (b) use the zero or root feature of a graphing utility to approximate the real zeros of the function. verify your results in part (a) by using the table feature of a graphing utility. 
37. f(x)= x^3 +2x^2 -x -1
39. f(x)= x^4-6x^2 -4

anonymous · Answer

please help me:(

anonymous · Answer

I really don't get how to use the intermediate value theorem for these problems