Use Newton's method with initial approximation x1 = −1 to find x2  the second approximation to the root of the equation x^3 + x + 7 = 0.x2 = ?

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cosinusix | College Teacher | (Level 3) Assistant Educator

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Use the Newton iteration formula:



In our case, `f(x_1)=-1-1+7=5`




Answer: `x_2=-9/4`

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