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Let f(x) = x^3 + x - 4 a. Show that f(x) has a root on...

Let f(x) = x^3 + x - 4

a. Show that f(x) has a root on the interval [1,4]

b. Find the first three iterations of the bisection method on f on this interval

c. Find a bound for the number of iterations needed of bisection to approximate the root to within 10^-4

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