Mathematics - Application of Derivative Question with Solution | TestHub

The set of all real values$\mathrm{\lambda }$for which the function$f\left(x\right)=\left(1-{\cos }^{2}x\right). \left(\mathrm{\lambda }+\sin x\right), \mathrm{x\epsilon } \left(-\frac{\mathrm{\pi }}{2}, \frac{\mathrm{\pi }}{2}\right)$, has exactly one maxima and exactly one minima, is :