Mathematics - Application of Derivative Question with Solution | TestHub

$\mathrm{f}(\mathrm{a})=\mathrm{f}(\mathrm{b})=\mathrm{f}(\mathrm{c})=\mathrm{f}(\mathrm{d})=0$ $\mathrm{f}(\mathrm{x})=0$

( 4 times). Graph of $\mathrm{f}(\mathrm{x})$ will intersect 4 times the x -axis. So there will be minimum three turnings. and ${\mathrm{f}}^{\prime }(\mathrm{x})=0$ minimum (3 times). So ${\mathrm{f}}^{\prime \prime }(\mathrm{x})=0$ will be minimum (2 times).