Let f(x)=x⁴+2x³-4x²-10x-5

1. Find a small interval on x-axis that contain a root of the function f in the interval (0, 3).
2. Use bisecting method to find the root in (a) to an accuracy of 0.05. That is, if the true root is "r" then a solution "s" satisfying the condition |s-r| 0.05 is considered satisfactory.