find-x-inthe-eqn-3-x-1-x-3-

Question Number 44214 by 12344 last updated on 23/Sep/18

find x inthe eqn .

3^{x} - 1 = x^{3}

Answered by MJS last updated on 23/Sep/18

two solutions are obvious

x = 0

x = 2

two other solutions found by drawing

f (x) = 3^{x} - x^{3} - 1 and then approximating

x = - . 845839

x = 3.22064

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