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the curve y = x^3 + 4x - 3 intersects the x-axis at the point where x = ki) show that k lies in the interval [0.5, 1]ii) show that the equation x^3 + 4x - 3 = 0 can be rearranged into the form x = 3 - x^3 / 4iii) use the iterative formula with x1 = 0.5 to find x2, x3, and x4

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