Question

Find x if f(x) = 2x 7 and f(x) = -1.

Answer 1

Hello,


`f(x)=2x^7=-1\\ ==\ \textgreater \ x= \sqrt7]{ -(1)/(2)} \\ ==\ \textgreater \ x=-\sqrt7]{-(1)/(2)}\\ ==\ \textgreater \ x=0,9057236642639066715941728732151...\\.`