MCQ
The derivative of $F[f\{ \phi (x)\} ]$ is
- A$F'\,[f\,\{ \phi \,(x)\} ]$
- B$F\,[f\,\{ \phi \,(x)\} \,]\,f'\{ \phi (x)\} $
- C$F'[f\,\{ \phi \,(x)\} ]\,f'\{ \phi (x)\} $
- ✓$F'\,[f\,\{ \phi \,(x)\} ]\,f'\{ \phi (x)\} \,\phi '\,(x)$
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$(1)$ F has a local minimum at $x=1$
$(2)$ $F$ has a local maximum at $x=2$
$(3)$ $F ( x ) \neq 0$ for all $x \in(0,5)$
$(4)$ F has two local maxima and one local minimum in $(0, \infty)$