Question: If a and b are positive numbers, prove that the equation has at least one solution in the interval (-1, 1). 3 3 +x 2

If a and b are positive numbers, prove that the equation

3 х3 +x — 2 x³ + 2x? – 1


has at least one solution in the interval (-1, 1).

3 3 +x 2 x + 2x? 1

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