Question

Срочно!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

$y = \frac{x {}^{3} }{ \cos(x) } \\ y = \frac{3x {}^{2} \times \cos(x) - x {}^{3} \times ( - \sin(x) )}{ \cos(x {}^{2} ) } \\ y = \frac{3x {}^{2} \times \cos(x) + x {}^{3} + \sin(x) }{ \cos(x {}^{2} ) }$