MCQ
વિધેય $2{x^3} - 6x + 5$ એ . . .. અંતરાલમાં વધતું છે.
- A$0 < x < 1$
- B$ - 1 < x < 1$
- ✓$x < - 1$ અથવા $x > 1$
- D$ - 1 < x < - 1/2$
==> ${x^2} - 1 > 0$==> $(x - 1)$ $(x + 1) > 0$
==>$x > 1$ or $x < - 1$.
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